2015届代词和数词OK.ppt

1. it作人称代词,代替前面提到的事物. 2. it指代时间,季节,距离. 3. it作形式宾语,常用在6123结构中.(think , find, make, believe, …) 4. it作形式主语. 当动名词,不定式,从句作主语时,常用it作形式主语. 内容提要 1．代替上文中提到过的人或事物。指代人时，一般用于小孩或身份不十分明朗的人。 The Parkers bought a new house but _____ will need a lot of work before they can move in. A. they B. it C. one D. which B 2．用于表达天气、环境、时间、距离、 季节等。 ◆ It’s half an hour’s walk from here to our school． ◆ It’s nice and warm here．But it’s two o’clock now, and it’s time for us to go to school． 注意下列几种表示时间的句型 ①.It is time ( about time ,high time ) that ... ◆ It’s high time that we left. ②.It is the first ( second ... ) time that ... ◆ It’s the first time that I have been praised. ③.It is .... since ... ◆ It’s three years since they got married. ④.It is / was ... when ... ◆ It was 1949 when the PRC was founded. ⑤.It will be / was ... before ... ◆ It will be two years before we meet again. 3. We think it important to learn a foreign language.该句型中的it 作形式宾语。为了记忆方便我们可称该句型为“6123结构”。?6 指主句中常用的动词：think, believe, make, find, consider, feel；?1 指的是形式宾语 it；　?2 指的是宾补的两种形式： 形容词或名词；?3 指的是真正宾语的三种形式：不定式短 语, 动名词短语或 that 引导的宾语从句。 It作形式主语时的几个常见句型:? ①. It is kind ( of sb. ) to do sth.?该句型中的不定式如果须要逻辑主语，则 须要前置介词 of, 而句型中的形容词必须是 能表示逻辑主语特征的形容词，常见的有： bad , brave , careless, clever , cruel , foolish , honest , horrible , kind , lazy , modest , naughty , polite, rude , silly , stupid , wise ②. It takes sb. ... to do sth.?“做…要花某人…” ◆ It took me ages to repair my computer. ③. It is no good (use ) doing sth.?该句型中的真正主语是动名词短语，主句中的表语可以是 no good , no use , no value, no importance … ◆ It’s no use crying over the spilt milk. ④. It doesn’t matter whether ( if ) ...?＂不论（是否）…没关系… ◆ It doesn’t matter whether he is for my plan or not. ⑤. It happens (seems, appears ) that... ◆ It happened that I had seen this problem in some book. ⑥. It is said (reported, learned....) that ...? “据说”（据报道，据悉．．．） ◆ It is said that he has gone to New York to attend a medical meeting. ?⑦. It is a pity (