《2018年高三英语一轮总复习专题2.3computers句型语法含解析》由会员分享，可在线阅读，更多相关《2018年高三英语一轮总复习专题2.3computers句型语法含解析（9页珍藏版）》请在金锄头文库上搜索。
1、专题2.3 Computers【学以致用】三、重点句型剖析1.（教材原句）I developed very slowly and it took nearly two hundred years before I was built as an analytical machine by Charles Babbage.我发育缓慢，差不多到了两百年之后，查尔斯巴比奇才把我制成了一台分析机。【句式分析】句中before引导时间状语从句，意为“之后，.才”。另外before除了其基本意思“在之前”以外，还可以表示“(之后)才；没来得及；以免；免得”之意。【归纳拓展】“It was时间段before
2、.”表示“过了多久才”。从句常用一般过去时。“It was not long before.”意为“不久就”。从句常用一般过去时。“It will not be long before.”表示“不久就会”。从句常用一般现在时。“It will be时间段before.”表示“要过多久才”。从句常用一般现在时。（1）They walked a long way they arrived at their destination.他们走了很长的路才到达目的地。（2）_ I could say a word，he had rushed out of the classroom.我还没来得及说句话，他
3、就冲出了教室。（3）It was three days _ he came back.过了三天他才回来。（4）It was not long _ he got a rise in the company.不久他在公司就升了职。【答案】（1）before （2）Before（3）before （4）before2.（教材原句）Over time my memory has developed so much that，like an elephant，I never forget anything I have been told!随着时间的推移，我的记忆能力发展地如此之快，就像一头大象一样，我
4、从来不会忘记人们告诉我的任何事情！【句式分析】本句为主从复合句。主句是my memory has developed so much；that引导结果状语从句，其中I have been told是省略关系代词that的定语从句，修饰先行词anything。so.that.如此以至于，that引导结果状语从句。【归纳拓展】so.that.常用结构如下：soadj./adv. +that 从句so adj.a/an可数名词单数+that 从句so many/few可数名词复数+that 从句so much/little不可数名词+that 从句such.that.“如此以至于”也可用来引导结果状
5、语从句。such为形容词，一般用来修饰名词，常构成如下结构：sucha/anadj.可数名词单数+that 从句suchadj.可数名词复数/不可数名词+that 从句在so.that.句式中，如果that引导的是目的状语从句，则从句中多含有情态动词，如may，might，can，could等。so that 引导目的状语从句，有同样用法。学%She was so excited that she couldnt go to sleep.她兴奋得睡不着觉。It was so hot a day that nobody wanted to do anything.(It was such a h
6、ot day that nobody wanted to do anything.)天气如此热，谁也不想干活。I made so many mistakes in the composition that the teacher criticized me.我的作文中出了许多错误，老师批评了我。拓展：当 so./such.位于句首时，句子要部分倒装。So small was the mark that I could hardly see it.那个标记非常小，我几乎看不见它。so.that.中的主句和从句的主语是同一个，that 从句也可改为 as to do 形式。The old lady
7、 was so kind that she led me to the hospital.The old lady was so kind as to lead me to the hospital.这个老太太是那样好心，她把我领到了医院。so that 连在一起用，可引导结果状语从句，也可引导目的状语从句。so that引导目的状语从句时，从句中常使用 can/could/may/might/will/would/should 等情态动词；引导结果状语从句时，从句中一般不用 can和 may等词，在 so that前可以有逗号，意思是“因此；所以”。He hurried up so that
8、 he could catch the train.他匆匆赶路为的是赶上火车。(对比：He hurried up so that he caught the train. 他匆匆赶路，结果赶上了火车。（1）_about wild plants that they decided to make a trip to Madagascar for further research.ASo curious the couple wasBSo curious were the coupleCHow curious the couple wereDThe couple was such curious（
9、2）Most children need encouragement in time of failure _ they can cheer up again.Aso that Bin case Cbecause Dif解析：考查 so that 引导目的状语从句。答案：A3.（教材原句）By the time I was sixteen，my dream had come true当我十六岁时，我的梦想已经成真了。【句式分析】句中by the time 相当于一个连词，引导时间状语从句，意为“到为止”。【归纳拓展】by the time引导的时间状语从句用一般现在时或现在完成时时，主句通常用
10、将来完成时(强调主句谓语动作在从句谓语动作发生之前已经完成)，有时也可用一般将来时(状态性动词)和一般现在时(祈使句)by the time引导的时间状语从句用一般过去时时，主句通常用过去完成时(强调主句谓语动作在从句谓语动作发生之前已经完成)，有时也可用一般过去时(状态性动词或非持续性动词的否定形式)即学即练（1）By the time they get there，we (finish) the work.他们到那里时，我们已经把工作做完了。（2）By the time the soldiers arrived at the area，the number of the injured _
11、 (rise) to ten thousand.当士兵们到达那个地区时，伤员已增至一万人。4. （教材原句）She programs us with all the possible moves she has seen while watching human games她把观看人类比赛时所看到的一切可能的动作编入我们的程序。【句式分析】while watching human games 为省略式状语从句，如补全为while she is watching human games.【归纳拓展】状语从句的省略原则：在when，while，if，unless，though，once等引导的时间
12、、条件和让步状语从句中，若从句的主语与主句主语一致，且从句中含有be动词时，为了使句子结构简洁，可省略从句中的主语和be动词。若从句的主语和动词为itbe的某种形式时，也可以将it be一起省略。即学即练（1）The project is hard to stop once _(begin)这个工程一旦开始就很难停下了。（2） , please give me a call.如果有必要，请给我打电话。【答案】（1）begun （2）If necessary5. （教材原句） I would really like to play against a human team，for I have
13、been programmed to act just like them.我真的特别想要和人类球队比赛，因为我经过程序编制，行动起来和他们一样。【句式分析】本句中for为并列连词，表原因，用于对前面所述情况作补充说明。它一般不置于句首，其前通常有逗号与前面的分句隔开。即学即练（1）He found it more difficult to read， his eyes were failing.他觉得阅读起来更困难了，因为他的视力越来越差。（2）He felt no fear，_ he was a brave man.他不感到害怕，因为他是个勇敢的人。【答案】（1）for （2）for【明辨
14、异同】for，because，since，as，now thatfor“因为”，并列连词，前后不是主从关系，而是并列关系，它对前面一个分句补充说明其理由，但不具备因果关系because“因为”，与主句是因果关系，直接说明其原因，语气最强烈，也最常用，能回答why，可用强调句型对其强调since“既然”，与主句有因果关系，说明理由，表示大家都知道的原因as“由于”，与主句有因果关系，有时可与because互换，说明显而易见的理由，但语气比较弱now that“既然”，相当于sincesince，now that，as，because，for（3）_we are all here，lets start.（4）_he wasnt ready in time，we went without him.（5）I cant do it now _Im busy.（6）It must have rained last night，_the ground is wet.6.（教材原句）As time went by，I was made smaller.随着时间的流逝，我变得更小了。【句式分析】连词as引导时间状语从句，意为“随着”，with也可译成“随着”，但其后接的是复合结构而不是句子。You will grow wiser as you grow older.你会随着年龄的增长而越来越聪明。
