| 代 词 IT 的 用 法 |
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１、代替则提到的一件事物。 ２、起提示代词的作用，指一个人或事物；指做某个动作的人。 ３、表示时间、天气、距离等。 ４、代替一个由否定式、动名词短语或主语从句。 ５、自然现象（如天气、气候、明暗等）、季节时间、环境等。 ６、强调句型：It is/was+ 被强调部分＋that... eg: It was Xiao Yang that did it. ７、It takes sb. some time to do sth. eg: It took the sixth blind man quite a long time to find the elephant. ８、It is one's duty to do sth. eg: It is our duty to attend this matter. ９、It is no use /good doing sth. eg: It's no use talking to about it. １０、It is ＋ for/of sb. to do sth.(necessary, important, strange, natural,后用for，在foolish, kind, nice, clever, silly, stupid, good, right, wrong rude等后用of。 eg:It is necessary for us to master a foreign language. It is very kind of you help me with my English. １１、It happens/seems等动词＋that从句： eg:It happened that I wasn't there that day. It seemed that he had read the report. １２、It doesn't matter to sb. whether...句型： eg:It doesn't matter to me whether he comes or not. １３、It is said/supposed/known/reported/announced/decided等动词＋that从句： eg: It is said that the novel has been translated into several foreign languages. １４、It is + 时间 + since从句（从句中谓语动词用一般过去时）。 eg: It is ages since I last saw him. １５、It is + the 序数词 + time + that从句（从句中通常用现在完成时）。 eg: It/This is the second time that I have been to Beijng. １６、It is + adj.+ that 从句 （形容词有：important, necessay, impossible, natural等，that从句中通常用虚拟语气should do或do）. eg: It is important that we should keep the balance of nature. １７、It is + n. + that 从句 （名词有：a pity, a shame, no wonder等） eg: It is a pity that you didn't come yesterday. １８、It is time that从句（从句中虚拟语气did）. eg: It is time (that) you went to bed. １９、It is (not) long before从句（从句中用一般现在时代替一般将来时）。 eg: It was not long before they drove the invaders from their country. ２０、动词（feel, think, make, find, consider）＋ it ＋adj.＋that从句。 动词（feel. think, make, find, consider）＋it＋adj.＋to do sth. 另：take it for granted that从句。 eg: You may think it strange that anyone would live there. You should not take it for granted that your parents should give you money. 表示将来的几种动词形式 １、be about to即将做，就要做 eg: I was about to start out when it began to snow. ２、be to do sth.按约定、计划、或按职责、义务应该或注定在短期将来要发生的动作。 eg: The sports meet is to take place on Sunday morning. ３、be going to do sth.表示已经决定或已经按排要做的事，也可用来表示很可能或必然发生的事。表示说话人的判断，不宜用will代替be going to。如表示交谈时的临时决定，则不宜用be going to，应用will/shall。 ４、来往性动作及某些短暂性动词可用进行时来表示将来，可以用be going to do sth.用法替换使用，而不改变其意思。 What, whatever 与no matter what辨析 １、what与whatever均可作连代词引导名词性从句，what引导的名词性从句在句中作主语、表语、宾语，意为“所...的事物”，相当于the thing(s) which; whatever引导的名词性从句在句中可作主语、宾语、宾语补足语，意思是“凡是...的事物”，相当于anything/everything that，语气比what更强烈一些。 eg: What/Whatever we do id to serve the people. These books are just what I need.(不可用whatever) We'll make him whatever he is fit for.(不可用what) ２、whatever与no matter what均可作从属连词，引导让步状语从句。whatever常用于正式场合，no matter what多用于口语或非正式场合，一般情况下，两者可互换，意思是“无论什么，不管什么”。 eg: No matter what / whatever happens, keep on beginning. ３、what只用来引导名词性从句，不可用来引导让步状语从句，no matter what只可用来引导让步状语从句，不可用来引导名词性从句，whatever既可引导名词性从句，也可引导让步状语从句。 eg: Please tell me what/whatever you saw. Whatever happens, keep calm. ４、Whatever可用于否定句或含有any的句子，其位置必须放在名词或代词后面，用来加强否定语气，表示“毫不...”，“一点儿”，“任何...”，即使在表示人的anyone等后也可以这样用，而what或no matter what则不可这样用。 eg: He knew nothing whatever about it. I cannot see anyone whatever in the park. Deep 和Deeply的用法 deep和deeply一样，也可用作副词，但两者在具体的用法上有很大差异，指动作或事物的实际深度时，较多地用deep，间或也可用deeply。 eg:They are digging deep to find water. The ship sank deep in the sea. My father often works deep into the night. Still waters run deep.(静水必深、大智若愚) When you plough the soil, plough deep the first time and less the second time. 与介词into短语连用时，一般用deep，而不deeply用；deeply较多地用于喻义，尤指情感的深度，这时一般不用副词deep。 eg: be deeply interested in hurt sb deeply deeply regret be deeply in love with be deeply moved 形容词deep除表示物体的深度以外，可以用来指物体的纵深，睡眠的深沉，悲痛的深切，工作的专心。 eg: ten meters deep deep in the woods be in a deep sleep take a deep breath be in deep sorrow deep in t thought |
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