41. 彼得一直沒有來的原因是他沒趕上這班火車。(catch)

42. 他認(rèn)為每次考試作好準(zhǔn)備是重要的。(it)

43. 學(xué)好一門外語需要時間和努力。(effort)

44. 如何解決這道難題將在明天的會上討論。(solve)

45. 對學(xué)生來說，把座位讓給這位老年婦女是最禮貌的。(polite)

46. 與湯姆打賭是沒有用的，因為他永遠(yuǎn)不會改變他的想法。(no use)

47. 我寧可失去這場比賽，也不愿意傷害他。(would rather)

48. 除了請醫(yī)生外，似乎沒有別的事可做。(nothing but)

49. 據(jù)說這本書已被譯成好幾種外語。(translate)

50. 愛倫今天上午缺席，因為她要去補(bǔ)牙。(have sth. done)

41. The reason why Peter hasn’t come is that he didn’t catch the train.

42. He thinks it important that he does full preparation before the examinations every time.

43. Learning a foreign language well requires time and effort.

44. How to solve the problem will be discussed at tomorrow’s meeting.

45. It is polite for the student to give up his seat to the elderly woman.

46. It is no use debating with Tom, because he will never change his mind.

47. I’d rather lose the game than hurt him.

48. There seemed nothing else to do but send for a doctor.

49. It is said that the book has been translated into several foreign languages.

50. Ellen was absent this morning because she had her tooth filled.