Inversion and Advanced Modality

Study the questions and tasks

Work through the material below, or start the interactive practice above to complete an attempt. Try the exercises before opening any answer or transcript sections, then use them to review your work.

Practice level

C1. Try this level if you can follow the instructions and understand most of the language; choose an earlier level if you need more support.

Question formats

Single choice

How to approach this practice

Read the complete sentence and notice the subject, verb form, time reference and word order before answering.

1. Question 1 · Single choice

   Choose one answer.

   In my entire career as a critic, rarely ___ such a thoughtful performance.

   1. have I seen
   2. I have seen
   3. have seen I
   4. did I saw
   Check answers and explanations

   Answer

   have I seen

   A negative adverbial at the beginning triggers inversion of the auxiliary and subject.

   have I seen: Correct: Rarely have I seen...

   I have seen: The normal word order is not used after fronted rarely.

   have seen I: The subject and auxiliary are in the wrong order after rarely.

   did I saw: After did, use the base form see, and this option also does not match the intended present-perfect context.

2. Question 2 · Single choice

   Choose one answer.

   Not only ___ the policy unfair, but it is also impractical.

   1. is
   2. is it
   3. it is
   4. does
   Check answers and explanations

   Answer

   is

   After not only at the beginning, invert the verb be and the subject.

   is: Correct: Not only is the policy unfair...

   is it: The subject it is already expressed after the blank.

   it is: The normal order is not used after fronted not only.

   does: Does cannot be followed by the adjective unfair in this structure.

3. Question 3 · Single choice

   Choose one answer.

   You ___ have told me earlier; I could have helped.

   1. should
   2. should have
   3. must have
   4. would
   Check answers and explanations

   Answer

   should have

   Should have plus the past participle expresses criticism or regret about a past action that was advisable.

   should: Should alone needs a base verb and cannot complete have told.

   should have: Correct: You should have told me earlier.

   must have: Must have expresses a strong past deduction, not advice or criticism here.

   would: Would have does not express the intended criticism in this sentence.

4. Question 4 · Single choice

   Choose one answer.

   Were the proposal ___ approved, several groups would benefit.

   1. to be
   2. being
   3. be
   4. been
   Check answers and explanations

   Answer

   to be

   Formal conditional inversion uses were plus the subject plus to-infinitive for a hypothetical proposal.

   to be: Correct: Were the proposal to be approved...

   being: Being does not form this formal conditional inversion.

   be: The bare form is not used after were in this pattern.

   been: Been is a past participle and cannot follow were here.

5. Question 5 · Single choice

   Choose one answer.

   It is high time the council ___ action.

   1. took
   2. takes
   3. has taken
   4. will take
   Check answers and explanations

   Answer

   took

   After it is high time, English traditionally uses the past simple for an action that is now overdue.

   took: Correct: It is high time the council took action.

   takes: The present form is not the conventional form after high time.

   has taken: Present perfect does not express the required overdue action here.

   will take: Will is not used after high time in this structure.

What to review next

After checking an answer, explain the rule in your own words and write a new sentence using the same pattern. Revisit any rules you could not explain.

A focused practice result shows how you did on these tasks. Use several activities across skills to decide what to study next; one practice score does not certify an overall CEFR level.

Before you practise: a worked example

Express advice, ability or possibility.

You should take a break.

Should + the base form of a verb expresses advice. The verb after should does not take an -s ending.

This teaching example is separate from the scored questions. After your test, compare any mistakes with the explanation and revisit the topic before trying again.