Use:
1. For an action happening now.
Listen! The baby is crying.
I am listening to the radio.
What are you doing now?
2.For plans for the near future
I am going to the theatre tonight.
We are having a picnic next Monday.
Is he visiting his parents this Sunday?

Exercise 2
I. Recognizing Present Continuous
II. Simple Present or Present Continuous

III. Simple Past
Form:

	Singular			Plural
1st person	I drank	I did not drink.	Did I drink?	We drank.	We did not drink.	Did we drink?
2nd person	You drank.	You did not drink.	Did you drink?	You drank.	You did not drink.	Did you drink?
3rd person	He/She/It drank.	He/She/It did not drink.	Did he/she/it drink?	They drank.	They did not drink.	Did they drink?

Use:
1. For completed actions in the past
I didn't go to school yesterday.
He visited London in 1998.
He read the question carefully, made a detailed plan and wrote a long essay.
2. For past habits
He always carried an umbrella to school.
They never drank wine.
I learned French when I was in primary school.

Exercise 3
I. Recognizing Simple Past
II. Simple Past or Simple Present

IV. Past Continuous
Form:

	Singular			Plural
1st person	I was drinking.	I was not drinking.	Was I drinking?	We were drinking.	We were not drinking.	Were we drinking?
2nd person	You were drinking.	You were not drinking.	Were you drinking?	You were drinking.	You were not drinking.	Were you drinking?
3rd person	He/She/It was drinking.	He/She/It was not drinking.	Was he/she/it drinking?	They were drinking.	They were not drinking.	Were they drinking?

For an action going on during a certain time in the past
At midnight, we were still watching a film in the cinema.
I was playing basketball all this morning. What were you doing?
While my mother was cooking in the kitchen, we were listening to music.

Exercise 4
I. Recognizing Past Continuous
II. Simple Past & Past Continuous

V. Present Perfect
Form:

	Singular			Plural
1st person	I have drunk.	I have not drunk.	Have I drunk?	We have drunk.	We have not drunk.	Have we drunk?
2nd person	You have drunk.	You have not drunk.	Have you drunk?	You have drunk.	You have not drunk.	Have you drunk?
3rd person	He/She/It has drunk.	He/She/It has not drunk.	Has he/she/it drunk?	They have drunk.	They have not drunk.	Have they drunk?

1. For past actions whose time is not given.
I have read the instructions but I don't understand them. (time is not given)
Have you had breakfast? No, I haven't had it yet. (time is not given)
Note: I read the instructions last year. (time given, use simple past)
Have you seen my stamps?
Yes, I have. (time is not given)
Yes, I saw them on your desk a minute ago. (time given, use simple past)
2. For an action which begins in the past and still goes on.
He has been in the army for two years. (he is still in the army)
I have smoked since I left school. (I still smoke)
Ann has loved chocolate since she was a little girl. (She still loves it)

Exercise 5
I. Recognizing Present Perfect
II. Simple Past or Present Perfect

VI. Present Perfect Continuous
Form:

	Singular			Plural
1st person	I have been drinking	I have not been drinking.	Have I been drinking?	We have been drinking.	We have not been drinking.	Have we been drinking?
2nd person	You have been drinking.	You have not been drinking.	Have you been drinking?	You have been drinking.	You have not been drinking.	Have you been drinking?
3rd person	He/She/It has been drinking.	He/She/It has not been drinking.	Has he/she/it been drinking?	They have been drinking.	They have not been drinking.	Have they been drinking?