TOEIC Link Part 5: conjunctive adverbs versus conjunctions

Three different kinds of word can express the same logical relationship — contrast, cause, addition — and yet they follow completely different grammar rules. However, but, and despite all signal contrast, but you cannot swap one for another without breaking the sentence. Part 5 loves this overlap: it offers you a blank between two ideas, fills the choices with words that all mean roughly the right thing, and waits to see whether you know that only one of them is grammatically legal in that slot. The decision is almost never about meaning. It is about what kind of word the structure requires.

The three connector families

Sort every connector into one of three grammatical types. The type, not the meaning, tells you how to use it.

• Coordinating conjunctions — and, but, or, so, for, nor, yet. They join two independent clauses with a comma before them: Sales rose, but costs rose faster.
• Subordinating conjunctions — because, although, while, since, if, when, unless. They attach a dependent clause to a main clause: Although sales rose, profit fell.
• Conjunctive adverbs — however, therefore, nevertheless, moreover, consequently, otherwise. They are adverbs that comment on a sentence; they do not grammatically join clauses.

The whole exam trap lives in that third group. A conjunctive adverb looks like a connector and means like a connector, but it behaves like an adverb — and that difference controls the punctuation.

Why a conjunctive adverb cannot join two clauses

This is the single most tested point. You cannot link two independent clauses with only a conjunctive adverb and a comma:

✗ The shipment was delayed, however we met the deadline.

That is a comma splice — two complete sentences glued with a comma. The word however is an adverb, so it has no power to fuse the clauses. To fix it, you need real clause-joining punctuation: a period or a semicolon.

✓ The shipment was delayed. However, we met the deadline. ✓ The shipment was delayed; however, we met the deadline.

Contrast that with a coordinating conjunction, which can do the joining on its own:

✓ The shipment was delayed, but we met the deadline.

So when Part 5 shows you two full clauses separated by a comma and asks for the connector, the answer is almost always the coordinating conjunction (but), not the conjunctive adverb (however) — because only the conjunction is grammatically allowed in that comma slot.

The punctuation signatures to memorise

Each family leaves a fingerprint in the punctuation. Read the punctuation first, then pick the word that matches it.

• Comma + blank + clause → coordinating conjunction. ..., so the team adjusted.
• Semicolon + blank + comma + clause → conjunctive adverb. ...; therefore, the team adjusted.
• Blank at the very front, comma later → subordinating conjunction (or a fronted conjunctive adverb). Because demand fell, prices dropped.

A conjunctive adverb can also slide into the middle of its clause, wrapped in commas: The team, however, disagreed. That mobility is itself a clue — conjunctions are locked between the clauses, but adverbs can roam. If the blank sits in the middle of a clause surrounded by commas, a conjunction is impossible and a conjunctive adverb is your answer.

Matching meaning once the grammar is settled

After you have used the punctuation to decide the family, the meaning picks the exact word. Group them by relationship:

• Contrast: but / yet (coordinating), although / while (subordinating), however / nevertheless / nonetheless (adverb).
• Cause and result: so (coordinating), because / since (subordinating), therefore / consequently / as a result (adverb).
• Addition: and (coordinating), moreover / furthermore / in addition (adverb).
• Condition: if / unless (subordinating), otherwise (adverb).

Notice that contrast and result each have one member in all three families. That is exactly why the test can build four plausible-meaning choices around a single blank. Your defence is to read the punctuation first: it eliminates two of the three families before you ever weigh the meaning.

A two-step routine for the exam

1. Look at the punctuation and clause structure. Two full clauses with only a comma? You need a coordinating conjunction. A semicolon or a comma-wrapped midsentence slot? You need a conjunctive adverb. A dependent clause hanging off a main one? You need a subordinating conjunction.
2. Then match the logical relationship — contrast, cause, addition, condition — and choose the one word from the correct family that fits.

Run those two steps in that order and the distractors stop working, because most of them are the right meaning in the wrong family.

Practice the contrast

Try these. The meaning is contrast in every case; only the grammar differs.

1. The proposal was thorough, ____ the budget committee rejected it. (Answer: but — two clauses, comma only, so a coordinating conjunction.)
2. The proposal was thorough; ____, the budget committee rejected it. (Answer: however — semicolon before, comma after signals a conjunctive adverb.)
3. _ the proposal was thorough, the budget committee rejected it._ (Answer: Although — front position attaching a dependent clause calls for a subordinating conjunction.)

Same idea, three different correct words. That is the lesson: on Part 5, the connector you choose is decided by structure first and meaning second.

Build the instinct

Connectors reward the same disciplined reading as other clause-level grammar. If you want to strengthen the underlying skill of seeing where clauses begin and end, work through our guides on parallel structure and correlative conjunctions, both of which train the same clause-boundary awareness. For the inverted-clause patterns that share this question-style grammar, see inversion after negative adverbials. The more automatically you read punctuation as a grammar signal, the faster these connector questions resolve.