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Intermediate English Grammar Step by Step

 

     UNIT 4 - The key
     HAVE TO, MUST, NEED NOT, CANNOT and SHOULD

 

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 have to b has to c must d must e must / have to

2 a does not have to b need not / do not have to c need not / do not have to d do not have to / need not e do not have to / need not

3 a had to b did not have to c had to d did not have to e will have to

4 a must not b must not c must not d must not e must not

5 a must b should c should d must e must

6 a need not b need not c need not d need not e need not

7 a must, cannot b cannot c cannot, must d cannot e must

8 a had to b had to c need not d need not / do not have to e had to f must not g had to h had to i must j cannot k cannot, must l need not / do not have to m need not n will have to o need not / do not have to p must not q did not have to r must s must t should u has to v had to w must not x will have to / should y need not / do not have to z had to

Written by Miquel Molina i Diez
Click here to return to Unit 4

    Contents

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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