A practical english grammar exercises 1 – A. J. Thomson - A. V. Martinet – Oxford University Press – 1977 – Blanda

**A practical english grammar exercises 1**: Contents:

Preface:
Exercise.
1.-Auxiliary Verbs, present tense.
2.-Auxiliary Verbs, past tense.
3.-Auxiliary Verbs in short answers.
4.-The simple present tense.
5.-The simple present tense, Negative and Interrogative.
6.-The present continuous tense.
7.-The simple present and the present continuous.
8.-The simple present and the present continuous.
9.-The simple past tense (mainly irregular verbs)
10.-The simple past tense, Negative and Interrogative.
11.-The past continuous tense.
12.-The simple past and the past continuous.
13.-The simple past and the past continuous.
14.-The present perfect tense.
15.-The present perfect and the simple past.
16.-The present perfect and the simple past.
17.-The present perfect and the simple past.
18.-The present perfect continuous tense.
19.-The present perfect and the present perfec continuous.
20.-"For" and "Since".