英语六级语法-重点讲解.doc

大学英语六级语法重点讲解英语六级语法重点讲解 大学英语六级 语法重点讲解 特殊的虚拟语气词——should 1） It is demanded / necessary / a pity + that…结构中的主语从句的谓语动词要用should 加动词原形， should 可省略。 句型： (1)suggested (2)It is　important　that…+ (should) do (3) a pity (1)suggested, ordered, proposed, required,　 demanded, requested, insisted； + (should) do (2)important, necessary, natural, strange，a pity,　 a shame,　 no wonder (3)It is suggested that we (should) hold a meeting next week. It is necessary that he (should) come to our meeting tomorrow. 2）在宾语从句中的应用 在表示命令、建议、要求等一类动词后面的从句中。order, suggest, propose, require, demand, request, insist, command, insist + (should) do I suggest that we (should) hold a meeting next week. He insisted that he (should ) be sent there. 注意： 如suggest, insist不表示建议 或坚持要某人做某事时，即它们用于其本意暗示、表明、坚持认为时，宾语从句用陈述语气。 The guard at gate insisted that everybody obey the rules. 判断改错: （错）　You pale face suggests that you (should) be ill. (对)　 Your pale face suggests that you are ill. (错)　 I insisted that you ( should) be wrong. (对)　 I insisted that you were wrong. 3）在表语从句，同位语从句中的应用 在suggestion, proposal, idea, plan, order, advice等名词后面的表语从句、同位语从句中要用虚拟语气，即（should）+动词原形。 My idea is that we (should) get more people to attend the conference. I make a proposal that we (should) hold a meeting next week. 一般现在时代替完成时 1) 有些动词用一般现在时代替完成时： hear, tell, learn, write , understand, forget, know, find , say,　remember. 　I hear (= have heard) he will go to London. 　I forget (=have forgotten) how old he is. 2) 句型 It is … since…代替It has been … since … 3) It is (= has been) five years since we last met 不定式的特殊句型so as to 1） 表示目的；它的否定式是so as not to do。 　　 Tom kept quiet about the accident so as not to lose his job.　 　　 汤姆对事故保持沉默是为了不丢掉他的工作。 　　 Go in quietly so as not to wake the baby. 　　 轻点进去，别惊醒了婴儿。 2)　so kind as to ---劳驾 　　 Would you be so kind as to tell me the time? 　　 劳驾，现在几点了。 None、few、some、any、one、ones的用法 一、 none 无 　　1) none作主语，多与of 构成短语 none of。 在答语中，none可单独使用。 　　Are there any pictures on the wall?　None. 　　2) none作主语，谓语动词单复