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知识要点 要点二 短语 1. add...to... 往……加入……；把……加到/进……里 归纳拓展 add up sth. =add sth. up 把……加起来 add up to总共是；总计为（不用于被动语态） add that...补充道…… add in算入；包括 add to增加；加到 例句：Add some oil to the water.往水中加入一些油。 Add your scores up and we will see who win. 把你们的分数加起来，我们就可以看出谁赢了。 The continuous rain added to our difficulty in rebuilding the dam. 持续的降雨增加了我们重修大坝的困难。 知识要点 【链接训练】 —Did little Kate help you with the work yesterday? —Why?Yes.But her help,as a matter of fact, ________ my difficulty.What a naughty girl! A.added up to B.added up C.added to D.added 【解析】考查短语add to“增加，添加”的用法。句意为：——昨天小凯特帮助你工作了吗？——什么？是的。但是事实上，她的帮助增加了我的困难。她是个调皮的小女孩！add up to“合计为，总计为”；add up“把……加起来”。 【答案】C 知识要点 2.used to do sth.过去常常做某事 归纳拓展 （1）It used to be said that...过去人们常说…… There used to be...过去有…… （2）be/get used to （doing） sth.习惯于做某事（to为介词，后跟名词、代词或动名词） be used to do sth.被用来做某事(use在此为“使用”之意，是其被动语态，后跟不定式) （3）used to否定主语+used not to do 主语+did not use to do 疑问Used+主语+to do...? Did+主语+use to do...? 知识要点 例句：I used to go to the cinema a lot,but I never get the time now. 我过去常看电影，但现在根本没时间。 Did there use to be a hotel on that corner? 那个拐角处过去有家旅馆吗？ The old man gets used to walking after supper. 这位老人习惯于晚饭后散步。 Wood can be used to make tables. 木材可用来制造桌子。 知识要点 同类辨析 used to do与would （1）used to do只有过去式，表示过去常做的事或过去的状态。主要与现在比较，暗示现在不再这样了。 （2）would用来表示过去反复出现的动作。多有时间状语加以限定，意为“总是”，不表示过去存在的状态。 例句：He used to go fishing on Sunday. 过去他常在星期天去钓鱼。（现在已不去了） On Sundays he would come to my college to see me.周日他总是来学校看我。 知识要点 【链接训练】 ①You didn’t use to like him much when we were at school, _________? A.were we B.weren’t we C.did you D.didn’t you 【解析】考查含有used to的反意疑问句的用法。 【答案】C 知识要点 ②I ________ in the house which_________ books and magazines. A.am used to live; used to keeping B.used to live; has been used to keeping C.having been used to living; was used to keep D.used to live; is used to keep 【解析】句意为：我过去曾经在现在存放书和杂志的房子里住过。第一个空表示“过去住过”要用used to do sth.的形式；第二个空表示“被用来做……”要用be used to do的形式。 【答案】D 知识要点 3. keep...out of...使……进不去；不让……进入；把……挡在外面 归纳拓展 keep away离开，避开 keep back退缩；隐瞒；留（扣）下；阻止 keep sb. from (doing) sth.阻止某人做某事 keep up (with) 跟上；不落在后面 keep it up不松劲，照原样继续下去 keep off让开，避开 keep on doing sth.继续做某事 keep on with (doing sth.)继续（做某事） keep out把……关在外面；阻止入内；不参加 知识要点 例句：This will keep air out of the water. 这会把空气阻挡在水之外。 I have always tried to keep out of their quarrel. 我总是尽可能的不卷入他们的争吵中。 You won’t be able to keep the truth from her father. 你是瞒不了她父亲事实真相的。 It’s hard to keep up with the changes in computer technology. 要跟上电脑技术的变化是很难的。 知识要点 【链接训练】 A certain percentage of your salary is _________ by the employer as an insurance payment. A.kept away B.kept out C.kept back D.kept up 【解析】句意为：你薪水的一定的百分比被雇主留下用于支付保险金。keep back“扣留，留下”，符合题意。keep away“远离”；keep out“使……进不去”；keep up (with)“跟上”。 【答案】C 知识要点 要点三 | 
