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Basic Vocabulary: • Contents

English Grammar for Beginners: • Contents

Intermediate English Grammar: • Contents

English Grammar Step by Step: • Contents
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Intermediate English Grammar Step by Step


     UNIT 2 - The key


Please notice that there may be other options to the ones provided in this key. Furthermore, a slash (/) has been used to include different alternatives.

1 a can't / cannot, be able to b could c Can, could, can't / cannot d be able to e been able to

2 a could b was able to c could not / couldn't d could e was able to

3 a Can / May / Could b can / may c been allowed to d could e Can

4 a may b may c can d may not e Do you think (that)

5 a may / might, may / might, can't / couldn't b could c can't / couldn't d can't / couldn't e could

6 a Can, can't b was able to c may / could / might d could e can f may g can't h Do you think (that) i can't j can, can't k Can / May / Could, can / may l could m be able to n May / Could o be able to p could / might q been able to r may / could / might s may / could / might t can / may u May v may w could, can't x can't y can't z could

Written by Miquel Molina i Diez
Click here to return to Unit 2


1.  The verb "to be" (the key)

2.  The modal verbs "can" and "may" (the key)

3.  The verb "have" (the key)

4.  Have to, must, need not, cannot and should (the key)

5.  The simple present and the present continuous or progressive (the key)

6.  The simple past and the past continuous or progressive (the key)

7.  The present perfect simple, the simple past, the present perfect continuous (or progressive), the past perfect simple and the past perfect continuous (or progressive)

8.  The "be going to" form, the present continuous and the future simple

9.  Irregular verbs

10.  Conditional sentences

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