49. Mr. Smith left for London after breakfast.

　　史密斯先生吃过早餐后就动身去伦敦了。

　　50. I found your coat after you had left the house.

　　你离开房子之后，我发现了你的外衣。

　　51. He grew weak in after years.

　　在以后的几年里，他变得衰弱了。

　　52. Good afternoon!

　　下午好!

　　53. Please say that again.

　　请再说一次。

　　54. We sailed against the wind.

　　我们逆风航行。

　　55. There are 26 votes for him and 8 against him.

　　有26票赞成他，8票反对他。

　　56. We have saved some money against our old age.

　　我们存了一些钱，以备老年之用。

　　57. What is your age?

　　你多大年纪?