III. Give the correct forms of the verbs in the blankets.
1. I ______________ (do) my homework now.
2. This is the first time she ______________ (be) to New York.
3. Yesterday, they ______________ (have) an accident.
4. How often ______________ you ______________ (go) to the gym?
1. am doing
2. has been
3. had
4. do you go
Giải thích:
1. S + am/ is/ are+ V_ing
2. S + have/has + V3/ed + O
3. S + V2/ed + O
4. S(I, you, we, they) + V + O.
Đáp án:
1. am doing
– Công thức: S + am/ is/ are+ Ving
– Đây là thì hiện tại tiếp diễn
2. has been
– Cấu trúc: This is the first time + S + have/has + P2
3. had
– Cấu trúc: S + V2/ed + O
4. do you go
– Cấu trúc; How often + do/does + Chủ ngữ + V?