Idiom
Three layers, in order. Layer 1 isolates the decision with nothing else in the way. Layer 2 hides it inside a full item, the way the exam does. Layer 3 reads your errors back to you and says what to repeat.
Work them in sequence — the diagnosis at the end only means something if you have your Layer 2 results in front of you.
The full answers — subject, verb and why — are in Model answers below, as one block. Work the set as a run before you open it.
| Correct | Correct | ||
|---|---|---|---|
| D1 | capable of removing | D11 | range from … to |
| D2 | responsible for | D12 | between four and nine |
| D3 | prohibits from copying | D13 | estimated to be |
| D4 | credited with | D14 | the ability to detect |
| D5 | attribute to | D15 | depends on |
| D6 | different from | D16 | comply with |
| D7 | consistent with | D17 | distinguishes from |
| D8 | regards as | D18 | preferable to |
| D9 | so dense that | D19 | forbids to accept |
| D10 | not only … but also | D20 | targeted at |
The pair worth isolating: D3 and D19. Prohibit takes from plus a gerund. Forbid takes to plus an infinitive. The two verbs mean the same thing and take opposite constructions, which is exactly the kind of thing this axis tests.
How to study these. Do not reread the table. When you get one wrong, write the correct form and your wrong form on one line, and keep those lines in a single list. The list of idioms you personally get wrong is far shorter than the list of idioms that exist, and it is the only one worth memorising.
Now the same decision, buried in a sentence with other things going on. Read the whole sentence, find where the options split, settle one axis at a time.
Capable of plus a gerund. There is no derivation; the construction is what it is. A, B, D and E are all plausible-looking and all wrong.
Prohibit … from plus a gerund. A uses the forbid construction, which is the trap: the two verbs are synonyms with opposite grammar. C, D and E invent constructions.
Different from — and differently from follows the same pattern. A is the most common error in spoken English and therefore the most tempting option. B is British usage that the format does not accept. D adds a substitute the sentence does not need. E avoids the construction.
Credit X with Y. The reverse form also exists — credit the discovery to the student — but the sentence puts the person first, which fixes with. A uses for, which is the near-miss most candidates choose.
So … that. A uses as, which is the standard wrong answer here. C adds a redundant so. D is a contortion. E is grammatical but changes the aspect to something continuous, which the physical claim does not support.
Range from … to, or between … and. A and E mix the two halves, which is the most common error with this pair. C is grammatical — between eight and twelve — but the sentence has range, and range between is not the idiom. D uses through, which is not the construction.
Two idioms colliding in one item is the shape this axis uses when it wants to be difficult: you have to know both to eliminate correctly.
Regard as. Nothing follows in this sentence but the adjective phrase, so plain as is correct. A uses to be, which is the standard error. C adds being, unnecessary when an adjective follows. E is a conditional construction the sentence does not call for.
Correct as written. Attribute X to Y. B reverses it into the credit construction. C, D and E are not constructions this verb takes.
Not only … but also, and the two halves must be parallel. The first half is cheaper to administer — an adjective phrase following the verb is. The second must attach to the same verb. C gives but also reaches, matching. A inserts a new subject it, breaking the parallel. B moves also and keeps the subject problem. D and E abandon the correlative pair.
This item sits at the join of Axis 3 and Axis 8: the idiom is not only … but also, and the parallelism is what the idiom requires.
Correct as written. Comply with. All four alternatives are prepositions English uses elsewhere and not with this verb.
Check your Layer 2 answers against this. The pattern of what you missed matters more than how many.
| If you missed | It means | Repeat | Your answers |
|---|---|---|---|
| 1, 5, 7 | Verb-plus-preposition pairs not fixed | D1, D8, D9 | |
| 2 | Prohibit and forbid still conflated | D3, D19 | |
| 3 | Different from not fixed | D6 | |
| 4, 8 | Direction of credit and attribute reversed | D4, D5 | |
| 6 | Range from…to and between…and mixed | D11, D12 | |
| 9 | Correlative pairs — this is Axis 3 as much as Axis 8 | Block 1, Axis 3 | |
| 8 or 10 | You changed a correct sentence | — |
The study method for this axis, restated because it is the only one that works: keep a single running list of the idioms you get wrong, in the form wrong → right. Reread that list, not a general one. After three or four practice sessions it will have ten or twelve lines and it will stop growing, which is the signal that this axis is done.