高考英语知识点解析Unit34句型归纳

高考英语知识点解析Unit34句型归纳 xx年高考已经开始倒计时，俗话说：“临阵磨刀，不快也光”，各位考生在此关键时刻千万不要放松，要继续武装自己。为此，出guo高考频道为xx考生特别推荐了一些高考试题和高考作文，大家可以用之作为额外的学习资源。预祝大家考出一个理想的成绩。 句型归纳 1. You shouldnt go rafting unless you know how to swim, and you should always wear a life jacket. 除非你会游泳，而且要一直穿着救生衣，否则就不应该去做漂流运动。 该句中的unless引导状语从句。例如：One cant learn a foreign language well unless he studies hard. unless引导的条件状语从句，一般可以与if.not.互换。还要注意unless引导的从句经常可以省略。 【考例】(200l北京春招)The men will have to wait all day _ the doctor works faster. A. if B. unless C. whether D. that 考查目标状语从句。 答案与解析B 句子意思是“如果医生不快点工作， 这些人将不得不等一整天。”应该选unless。 2. Eco-travel is a way to find out what can be done to help animals and plants as well as people. 生态游可以找到既帮助别人.又帮助动植物的途径。 该句中的as well as是连词，连接两个并列成分。例如: He can speak German as well as French. 常见的用法: 1. well是副词，意思是“好，优秀”，as well as是形容词 同级比较结构。 2. as well as是固定短语，意思是“和”，相当于not only but also.。 3. as well as连接两个并列成分作主语时，句子的谓语动词应该与前面那个名词或代词的人称或数保持一致。 4. as well as还可当作复杂介词用，意思是“除了之外，还有”;相当于besides，apart from。 5. as well，是副词短语，意思是“也”，相当于“too / also”常位于句尾，与too位置相当。 6. may / might as well do sth 表示“还是的好”。 【考例】(NMET 1994) John plays football _, if not better than David. A. as well B. as well as C. so well D. so well as 考查目标 as well as连接比较状语从句。 答案与解析B 该句中 if not better than相当于插入语，起干扰作用，如果不予考虑，原句就变成了同级比较结构 John plays football as well as David。 3. Before she could move，she heard a loud noise. 她还没有来得及动弹，就听见很响的声音。 However, before she could think twice, the water was upon her. 但还没有回过身来，洪水便逼近了她。 该两句中的before用作连词，后接时间状语从句。before用作连词，接时间状语从句时，表示“在之前”。但在不同的语境中，往往有比较灵活的译法。例如: He knocked me down before he saw me. 他差一点把我撞倒，才看到我。 【考例】(xx广东) The American Civil War lasted four years the North won in the end. A. after B. before C. when D. then 考查目标 时间状语从句的引导词选择。 答案与解析B before 表示“直到”。 4. Tree after tree went down, cut down by the water, which must have been three meters deep. 洪水想必深达三米，树一棵接一棵地倒了，被洪水冲断了。 该句中的must have been表示推测。例如：You look so tired. You must have stayed up last night. 情态动词may，might，most.can，could常用来表示推测。may，might，must多用在肯定句中，can，could多用在否定句和疑问句中。may，might，must，can，could后接动词原形表示对现在的推测;may，might，must，can，could后接have done。表示对过去的推测。例如： You may be a professor. / She must have met a fairy. 【考例】(xx辽宁)This cake is very sweet. You _ a lot of sugar in it. A. should put B. could have put C. might put D. must have put 考查目标 情态动词表示推测。 答案与解析 D 前文说蛋糕很甜，由此可知一定是糖 放多了。对于过去的动作的推测应使用have done的 结构，所以应在B、D之间做选择，又因为could have done表示本可以做而没有做，所以选择D。 5. . she heard a loud noise，which grew to a terrible roar. 她听见了很响的声音，接着就变成了可怕的隆隆轰鸣声。 该句中的which引导非限制性定语从句。例如：He bought some reference books, which were all about science. 他买了许多的参考资料.都是有关理科的。 which 作为关系代词.既可以引导限制性定语从句，也可以引导非限制性定语从句。例如：The train which left for Bei * g pulled in on time. 前往北京的火车按时进站了。His dog, which was now very old, became ill and died.他的狗，现在老了，生病死了。 【考例】(xx浙江) Jim passed the driving test, _ surprised everybody in the office. A. which B. that C. this D. it 考查目标非限制性定语从句。 答案与解析A which引导非限制性定语从句。指代 前面整个句子。that不能引导非限制性定语从句。 句型诠释 现在进行时的用法(is / am / are + doing) 1. 表示现在(说话的瞬间)正在进行或发生的动作。 Look! The monkey is climbing the banana tree. 2. 表示当前一段时间内的活动或现阶段正在进行的动作。(说话时动作不一定正在进行。) We are preparing for the meeting to be held next Friday now. 3. 表示说话人现在对主语的行为表示赞叹、惊讶、厌恶等。(常与always, constantly, continually, all the time, forever 等副词连用)，表反复的动作。He is always think- ing of others. (表赞许) She is always asking the same question. (表厌恶) You are always changing your mind. (表抱怨) 4. 表示在最近计划或安排要进行的动作。常用于go, e, leave, start, arrive, return, work, stay 等表移动、方向的动词。He is starting the work in a few minutes. / He is leaving for Bei * g tomorrow morning. 注意 1. 不用进行时的词有: (1) 系动词: feel, sound, smell, taste, look, appear, seem, remain, prove 等。 (2) 表结果的感官动词: see, notice, hear 等。 (3) 非延续性的动词，此动作开始即是结束：enter, aept, receive等。 (4) 表心理状态，存在状态，拥有的动词：love, like, hate, care, dislike, respect, prefer, know, understand, forget, remember, believe, want, wish, hope, mind, agree, belong to, depend on, own, have等。 2. 用进行时的特殊词有系动词get, turn, grow, bee, go, e, fall 等表由一种状态转入另一种状态时，用进行时表示渐近。Today, many rivers that were polluted are getting cleaner and cleaner. 当今，许多过去遭污染的河流又变得越来越清澈了。 比较 现在进行时表将来的用法与一般将来时的区别： (1) 现在进行时表近期的，事先已经计划安排好的 - How are you getting to the airport? - By taxi. Bob is ing with me to the airport. (2) will do 和 shall do 表客观将来。shall用于第一人称，will用于第一、 二、三人称。I will / shall finish middle school next month. 表有科学根据的预测。The weather report says it will rain tomorrow. 表客观必然。Man will make mistakes. (3) be going to 表现在打算在近期或将来要做某事。Im going to finish my homework tonight. 表根据已有迹象的预测。Its so dark outside, I think its going to rain. be going to不与e, go连用，而用be ing, be going 形式。Mary is ing here this evening. 注意 表计划、安排、规定要做的事，用“be + to do”。此外，表示按时刻表运行的动作常用一般现在时表将来。The meeting is to be held at 9:00 a. m. / Our plane leaves at 6:00 a. m. . 牛刀小试3 1. _ you call me to say youre not ing, Ill see you at the theatre. (xx 吉林) A. Though B. Whether C. Until D. Unless 2. Now that youve got a chance, you _ make full use of it. (NMET 1999) A. had better to B. might as well C. might as well as D. would rather 3. It was evening _ we reached the little town of Winchester. (xx 天津) A. that B. until C. since D. before 4.