Sử dụng to-V hoặc V-ing

32. to explain - grumbling

=> try to do sth

=> go on doing sth: tiếp tục làm gì

33. to forget - worrying

=> try to do sth

=> worth V-ing: đáng làm gì

34. laughing - seeing

=> can't/ couldn't help doing sth: không nhịn được mà làm gì

35. waiting - to be clear

=> sau preposition + V-ing

=> for sb/ sth to do sth

36. seeing 

=> remember doing sth: nhớ đã làm gì

37. standing - asking

=> keep + doing sth

38. to inform

=> regret to do sth: tiếc để nói lời gì

39. to see

=> advise sb to do sth

40. having locked - go - do

=> remember doing sth: nhớ đã làm gì

=> had better V

41. swimming

=> go swimming: đi bơi

42. to take

=> continue to do sth

43. giống 42

44. eating

=> like doing sth

32. I tried to explain ( try + to V : cố để làm gì ) ---> he went on grumbling ( go on + ving: tiếp tục làm gì đó ) went là quá khứ của go
33. Try to forget ( try + to V: cố để làm gì). It isn't worth + Ving -> Worrying
34. We couldn't help laughing ( can't help laughing: Không thể ngừng cười) when we saw him
35. We got tired of waiting  ( Tired of + Ving) for the weather to cleared
36. I remember seeing  
37. He kept standing ( keep + ving ) and asking  ( sau and thì vẫn dùng thì phía trước)
38. We regret to inform ( Regret + to V)