51.start off 以……开始，出发;开始

　　They start off early，so that they can catch the train.

　　他们出发得早，可以赶上火车。

　　52.complain about 抱怨

　　You've got nothing to complain about.

　　你没什么可抱怨的。

　　53.take off 脱掉，(飞机等)起飞

　　Take off your hat.It doesn't fit you.

　　取下你的帽子，它不适合你。

　　54.right away 马上

　　It's getting late.Please excuse me，but I must leave right away.

　　时间不早了。对不起，我得赶紧走了。

　　55.in return 作为回报

　　He gave her some roses in return for her kindness.

　　他送了她一些玫瑰以答谢她的好意。

　　56.shout at 大声说话，大声喊叫

　　Don't shout at me.Allow me to explain.

　　别对我大吼大叫。让我解释嘛。

　　57.come back 回来

　　It doesn't matter when you'll come back.

　　你什么时候回来都没关系。

　　58.be used to(doing something) 习惯……

　　He is used to getting up early.

　　他习惯了早起。

　　59.have the ability to 具备……的能力

　　I don't have the ability to do the job well.

　　我不具备做好这项工作的能力。

　　60.be free from 摆脱，免于

　　We must be free from the heavy homework.

　　我们必须从繁重的作业中解脱出来。

　　61.as long as 如果，只要，既然

　　As long as it doesn't rain，we can go.

　　只要不下雨，我们就可以去。

　　62.apply for 申请，请求

　　He applied for a job in the supermarket.

　　他申请超市的一份工作。

　　63.get upset 难过

　　Don't get upset.It's not your fault.

　　别难过，不是你的错。

　　64.be prepared to do 准备……

　　You must be prepared to work hard!

　　你必须认真准备工作。

　　65.keep…from 阻止

　　The heavy rain kept us from coming on time.

　　大雨使我们没有及时到来。

　　66.give up 放弃

　　We should give up smoking in order to keep healthy.

　　为了健康我们必须戒烟。

　　67.know of 熟悉，了解

　　I don't know the writer，but I know of him.

　　我不认识这个作家，但我了解他。

　　68.put out 扑灭

　　At last firemen have put out a big forest fire in California.

　　消防队员终于扑灭了加利福尼亚洲的一场森林大火。

　　69.from then on 从那时起

　　From then on she knew she would win.

　　她从那时起就知道自己会得胜。

　　70.be strict with 严格要求

　　You should be strict with yourselves and spend less time on playing games and more on study.

　　你应该严格要求自己，少玩游戏多学习。

　　71.fall ill 生病

　　She have to stay home because her son fall ill.

　　因为儿子生病，所以她得待在家里。

　　72.be grateful to 感谢，感激

　　This is Teacher's Day and a time to be grateful to all teachers.

　　今天是教师节，也是向所有教师致谢的日子。

　　73.at the age of 在……年纪(岁数)

　　In Britain，people get to the vote at the age of 18.

　　在英国，人们到十八岁有选举权。

　　74.in place of 代替

　　I will go to this meeting in place of you.

　　我会代替你去参加这次会议。

　　75.be curious about 对……感到好奇

　　It is good to be curious about the world around you.

　　对你周围的世界感到新奇是件好事。