`Ex 5:`

`1.` for

`=>` S + has/have + V-pp +.... + for + mốc thời gian.

`2.` since

`=>` S + have/has + V-pp +.... + since + số năm.

`3.` since

`4.` for

`5.` for

`6.` for

`7.` for

`8.` since

`Ex 6:`

`1.` have worked

`=>` S + has/have + V-pp +.....+ since 1970.

`2.` has been studying

`=>` S + has/have + been + V-ing +....+ for three years now.

`3.` have seen

`=>` S + have/has + V-pp + ... + for five days.

`4.` have lived

`5.` have got

`Ex 7:`

`1.` studied

`=>` Có yesterday nên đây là thì QKĐ.

`2.` have read

`=>` Có several time và before nên đây là thì HTHT.

`3.` have studied

`=>` Có almost nên đây là thì HTHT.

`4.` traveled

`=>` Có last summer nên đây là thì QKĐ.

`5.` had

`=>` Có last week nên đây là thì QKĐ.

$#Mon_lùn$

V. 1. for (for + khoảng tg)

2. since (since + mốc tg)

3. since

4. for

5. for

6. for

7. for

8. since

VI. 1. have worked

2. has studied

3. have seen

4. have lived

5. have gotten

VII. 1. studied

2. have read

3. have studied

4. travelled

5. had