Separable vs Inseparable Phrasal Verbs | 英文片語動詞語序規則完整指南

本文重點：英文片語動詞（英文學習中最重要的文法主題之一）分為「分離型」（separable）與「不分離型」（inseparable）兩大類。台灣上班族（台灣職場英文）在使用片語動詞時最常犯的是字序錯誤，尤其是代名詞的擺放位置。本文提供清晰的規則說明、大量職場例句，以及辨別類型的實用測驗方法，幫助備考多益（TOEIC）或需要商業英文的學習者快速提升準確性。

You already know what phrasal verbs mean. Turn off means to switch something off. Look after means to take care of someone. Come up with means to generate an idea. But knowing the definition of a phrasal verb and knowing how to use it correctly in a sentence are two very different skills — and the gap between them is where most Taiwan English learners make their most persistent grammar mistakes.

The issue is word order. English phrasal verbs belong to one of two grammatical categories: separable (分離型) and inseparable (不分離型). These categories determine where the object of the verb can appear in a sentence — and in some cases, where it must appear. The rules are consistent and learnable. Once you understand them, you will notice an immediate improvement in the accuracy of both your spoken and written English.

This guide explains what each category means, how to identify which type you are dealing with using a simple test, the most commonly used phrasal verbs from each group, and three-word phrasal verbs — a special category that is always inseparable. This is the structural grammar knowledge that vocabulary lists and memorization drills consistently leave out.

What Are Separable Phrasal Verbs? | 什麼是分離型片語動詞？

A separable phrasal verb is one where the object — the noun or noun phrase receiving the action — can be placed either between the verb and its particle, or after the particle. Both positions produce grammatically correct sentences when the object is a noun.

Take turn off as a clear example:

• お願いします turn off the projector. ✓
• お願いします turn the projector off. ✓

Both sentences are correct. The object the projector can appear in either position. This flexibility is the defining feature of a separable phrasal verb — the particle can be separated from the verb by the object.

However, there is a critical rule that applies specifically when the object is a pronoun — it, them, him, her, me, us, or you. When the object is a pronoun, it must appear between the verb and the particle. It cannot follow the particle.

• お願いします turn it off. ✓ (pronoun between verb and particle — correct)
• お願いします turn off it. ✗ (pronoun after particle — wrong)
• Can you pick them up? ✓
• Can you pick up them? ✗

This pronoun rule is the single most important practical takeaway in this guide. Native English speakers will notice turn off it または pick up them immediately — these constructions mark a speaker as non-fluent more noticeably than a vocabulary gap would. Correcting this one error will make your English sound significantly more natural in both conversation and professional email writing (商業英文).

Here are the most commonly used separable phrasal verbs for professional and daily life contexts. These appear frequently in workplace communication and on the TOEIC (多益) listening and reading sections:

• turn off — switch off a device: “Turn off your phone before the meeting.” / “Turn it off.”
• 選び出す — collect or fetch: “Can you pick up the package?” / “Can you pick it up?”
• put off — delay or postpone: “We need to put off the deadline.” / “We need to put it off.”
• call off — cancel: “The director called off the event.” / “The director called it off.”
• fill out — complete a form: “Please fill out this application.” / “Please fill it out.”
• hand in — submit work: “Hand in your reports by Friday.” / “Hand them in by Friday.”
• bring up — raise a topic: “She brought up an important concern.” / “She brought it up.”
• write down — record in writing: “Write down the key action items.” / “Write them down.”
• set up — arrange or establish: “Let’s set up a call for Thursday.” / “Let’s set it up.”
• give up — stop trying: “Don’t give up your quarterly goals.” / “Don’t give them up.”

What Are Inseparable Phrasal Verbs? | 什麼是不分離型片語動詞？

With inseparable phrasal verbs, the object — whether a noun or a pronoun — always comes after the complete phrasal verb. The verb and particle function as a single grammatical unit. Nothing can be inserted between them. Attempting to separate the verb from its particle produces an ungrammatical sentence, regardless of what type of object you are using.

Consider look after:

• 彼女 looks after her team carefully. ✓
• 彼女 looks her team after carefully. ✗
• 彼女 looks after them carefully. ✓
• 彼女 looks them after carefully. ✗

Even when the object is a pronoun, it still follows the particle — not the verb alone. This is the direct contrast with separable verbs, where a pronoun must go between verb and particle. With inseparable phrasal verbs, the pronoun rule is simpler: it always goes at the end, after the full phrasal verb.

Inseparable phrasal verbs include many of the most essential expressions for professional and interpersonal communication. Taiwan learners preparing for international work environments (台灣職場英文) will encounter these constantly in meetings, client calls, and email correspondence:

• look after — to care for: “Who is looking after the client relationship while you travel?”
• run into — to meet unexpectedly: “I ran into our regional director at the conference.”
• get over — to recover from: “It took the team three weeks to get over the failed product launch.”
• deal with — to handle: “Our support team will deal with the complaint directly.”
• go through — to experience or examine carefully: “We went through the contract clause by clause before signing.”
• come across — to find or encounter unexpectedly: “I came across a useful market analysis report this morning.”
• rely on — to depend on: “Our clients rely on us for consistent on-time delivery.”
• stand for — to represent: “What does the company’s new tagline stand for?”
• look up to — to respect or admire: “Everyone in the department looks up to the senior project manager.”
• get along with — to maintain a good working relationship: “She gets along with every member of the cross-functional team.”

The Pronoun Test: How to Identify the Type | 代名詞測驗：快速辨別類型的方法

There is no single grammatical label that automatically tells you whether a new phrasal verb is separable or inseparable — in most cases, you need to learn each one as you encounter it. However, there is a fast practical test you can apply in the moment to verify your intuition or check your memory.

The Pronoun Test: Replace the noun object in a sentence with it または them. Try the pronoun in two positions and notice which version sounds natural and which sounds wrong.

• “She handed in the report.” → “She handed it in.” ✓ / “She handed in it.” ✗ → Separable
• “He deals with the problem.” → “He deals with it.” ✓ / “He deals it with.” ✗ → Inseparable
• “Please fill out the form.” → “Please fill it out.” ✓ / “Please fill out it.” ✗ → Separable
• “She looks after the client.” → “She looks after them.” ✓ / “She looks them after.” ✗ → Inseparable

If the pronoun-between-verb-and-particle version sounds correct — even natural — you are likely dealing with a separable phrasal verb. If only the pronoun-after-particle version sounds acceptable, the verb is inseparable. The test works because the pronoun placement constraint is stronger and more immediately noticeable than the general noun-position rule.

A secondary pattern worth observing: phrasal verbs where the particle functions as a preposition pointing to a real physical direction, relationship, or target — words like after, into, through, の上, と — tend to be inseparable. The particle is semantically fused with the verb because it specifies the target or nature of the action. You cannot look someone without after — the full three-word combination is required to convey the meaning. This is a useful heuristic for unfamiliar phrasal verbs, though not a universal rule.

Three-Word Phrasal Verbs — Always Inseparable | 三字片語動詞：永遠不分離

Beyond two-word phrasal verbs, English has a significant set of three-word phrasal verbs — a verb followed by two particles. These are always inseparable, without exception. The object always follows all three words as a complete unit, with no possibility of inserting anything between them.

Three-word phrasal verbs are extremely common in both professional correspondence and everyday conversation. Because the word order never varies, they are actually easier to use correctly than two-word phrasal verbs once you have learned the full three-word form:

• look forward to — to anticipate with pleasure: “I look forward to your presentation on Thursday.”
• put up with — to tolerate: “The team can no longer put up with the constant last-minute changes.”
• come up with — to generate or produce (an idea, plan, solution): “The department came up with three strong proposals for the client.”
• catch up with — to reach the same level, or to reconnect: “Let’s catch up with the latest sales figures before the call.”
• run out of — to exhaust a supply: “We are running out of time before the product launch deadline.”
• get on with — to continue, or to have a positive working relationship: “Let’s get on with the agenda — we have a lot to cover.”
• cut down on — to reduce: “We need to cut down on unnecessary operational costs this quarter.”
• make up for — to compensate: “We will make up for the shipping delay with a discount on the next order.”

A frequent mistake Taiwan learners make with three-word phrasal verbs is dropping the final particle. “I look forward to the meeting” is correct; “I look forward the meeting” is missing に and is ungrammatical. Because final particles in three-word verbs are often unstressed in rapid speech, they are easy to miss when listening — but they are grammatically essential and cannot be omitted in professional writing or formal speaking.

From Grammar Rules to Natural Use | 從語法規則到自然應用

Understanding the separable and inseparable categories is the foundation, but real fluency with phrasal verbs comes through consistent practice at the production level — not just passive comprehension. Here are three methods that work particularly well for Taiwan learners in professional and exam preparation contexts (英文家教練習、多益備考、商業英文提升).

Label Every New Phrasal Verb | 學每個片語動詞時標記類型

When you encounter a new phrasal verb — in a textbook, a business email, a podcast, or a client meeting — record it with its grammatical type clearly labeled: [SEP] for separable, [INSEP] for inseparable. A vocabulary card that reads “hand in [SEP] = to submit work” is more useful than the definition alone, because it encodes the word-order behavior you need for speaking and writing, not just for comprehension. This habit takes five extra seconds per entry and dramatically reduces errors over time.

Practice the Substitution Drill | 代名詞替換練習

Take any sentence containing a phrasal verb and a noun object. Rewrite it twice — once with a pronoun in the grammatically correct position, and once with the pronoun in the wrong position. Deliberately producing and then immediately correcting an error builds a stronger felt sense of correctness than passive reading. This active error-contrast technique is particularly effective for grammar points that feel subtle rather than obviously wrong. For example, with the separable verb bring up:

• She brought up the issue in the meeting. → She brought it up in the meeting. ✓
• She brought up the issue in the meeting. → She brought up it in the meeting. ✗ (notice the awkwardness)

Study Phrasal Verbs in Professional Contexts | 從職場情境中學習

Context-anchored learning is significantly more effective than studying phrasal verbs in isolation. When you encounter a phrasal verb in a real email, a quarterly report, or a cross-team meeting, note the complete sentence — not just the definition. The surrounding sentence structure and the nature of the object carry grammar information that helps cement both the meaning and the correct word-order behavior simultaneously.

For Taiwan professionals in international business environments, pay particular attention to high-frequency professional patterns: email sign-offs (I look forward to hearing from you), meeting openers (Let’s get on with the agenda), and project deadline language (We need to put off the launch / We’re running out of time / Let’s call off the Tuesday session). These recurring real-world contexts accelerate both memory and natural, accurate deployment of phrasal verbs in your own communication.

Quick Reference: Separable, Inseparable, and Three-Word | 快速對照表

Use this summary when you need to quickly verify a phrasal verb’s grammar type. For any verb not listed here, apply the Pronoun Test described above.

Separable — pronoun must go between verb and particle:

• turn off, pick up, put off, call off, fill out, hand in, bring up, write down, set up, give up, take off, put on, look up (find in a reference), figure out, work out, throw away, put away, call up, take back, knock out

Inseparable — object (noun or pronoun) always follows the full phrasal verb:

• look after, run into, get over, deal with, go through, come across, rely on, stand for, look up to, get along with, ask for, apply for, wait for, hear from, care for, call on, insist on, depend on, agree with, consist of

Three-word (always inseparable — never split any element):

• look forward to, put up with, come up with, catch up with, run out of, get on with, cut down on, make up for, keep up with, look out for, get away with, live up to

When you encounter a phrasal verb and are genuinely unsure of its type, defaulting to placing the object after the full phrasal verb is the safer choice. This will always be correct for inseparable verbs, and for separable verbs with a noun object it is also acceptable — though not placing the particle in the most natural position. The one rule with no exception: pronouns with separable phrasal verbs must go between the verb and the particle. That is the error that native speakers notice first, and eliminating it is the highest-impact grammar improvement most intermediate Taiwan learners can make in this area of English (台灣上班族英文學習最容易忽略的文法重點).

Sources | 參考資料

• Cambridge English Language Teaching — Grammar resources on phrasal verb categories and usage
• BBCラーニングイングリッシュ — Phrasal verb audio exercises and practice materials
• Oxford Learner’s Dictionaries — Separable/inseparable labels and corpus-based example sentences