29. We haven't celebrated christmast for 2 years. ( Chuyển câu ở thì qkđ sang htht)

30. This picture was painted last night.( Bị động của thì qkđ: S+ was/were+V3/Ved)

31. If Tan didn't have a lot of homework, he could go to the cinema.( Câu điều kiện loại 2)

32. Because of the awful weather, they didn't go on a picnic. (Because+ Clause= Because of +Adj+N)

33. I don't remember the man, whom you meet in the supermaket. (Mệnh đề quan hệ)

34. Thought they are so poor, they always neatly dressed. 

29. We haven't celebrated Christmas for 2 years.

S + has/have + not + V3/ed + for /since + time 

30. This picture was painted by Mai last night.

S + was/were + V3/ed (bị động - thì QKĐ)

31. If Tan didn't have a lot of homework, he could go to the cinema.

If 2: If + QKĐ, S + would / could + V1 

32. Because the weather was awful, they didn't go on a picnic.

Because +clause , clause: bởi vì 

33. I don't remember the man whom you met in the supermarket last week.

N (người) + whom + S+ V 

34. Though they are so poor, they are always neatly dressed.

Though + clause, clause: mặc dù 

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