1、set off 出发；释放；使爆炸；引起

　　Her question set me off thinking.

　　她的问题引起我的思考。

　　The bomb must be set off at a place where there are no people.

　　炸弹应当在没人的地方引爆。

　　They have set off on a journey round the world.

　　他们已经出发作环球旅行。

　　同义词链接：let off 释放，引爆

　　2、sth. is used to do... 某物被用来做……

　　Wood can be used to build houses.木头可用来盖房子。

　　3、a cure for ... 治疗……的验方

　　It is difficult to find a cure for cancer.想找到治疗癌症的验方是很难的。

　　短语链接：cure sb. of one's illness治愈某人的……病。

　　4、have an effect on 对……有影响/效果

　　It will have a bad moral effect on the youngsters.

　　这事会对青少年的道德品质产生不良的影响。

　　5、consider 认为，考虑

　　Mao Zedong was considered as one of the greatest political leaders in the world.

　　毛泽东被认为是世界上最伟大的政治领袖之一。

　　(1)跟动名词：consider V+ing

　　I am considering paying a visit to America this summer.

　　我们在考虑今年夏天去美国。

　　(2)跟动词不定式的一般时或完成时：

　　consider to be或consider to have V+ed

　　We consider Beijing go be the heart of our country.

　　我们认为北京是国的心脏。

　　We considered her to have acted wisely.我们认为她做的很聪明。

　　6、be willing to do 乐于干某事，志愿

　　He is willing to work in Tibet after graduation.

　　他志愿毕业后到西藏去工作。

　　7、sooner or later 迟早

　　She will come sooner or later.她迟早会来的。

　　8、定语从句小结：

　　(1)The scientist whose speech I went to was named Pierre.我听过报告的那位科学家是皮埃尔。

　　(2)The rays which Marie studied were called "radioactive rays".玛丽研究的射线被称为"放射性光线"。

　　(3)There was a time when all scientists were willing to share their results.

　　有一段时间科学家们愿意与别人分享自己的成果。

　　(4)Out of many people who succeed, few are remembered.

　　有很多人成功了，但被记住的却是少数的。

　　(5)I remember the place where you left your overcoat.我想起了你忘记大衣的地方。