it的用法.doc

it 的 用 法几点需要注意的地方：一、 it用在find，feel，think，consider，make，take等动词之后，作形式宾语，代替后面的真正宾语 不定式、动词-ing形式或that从句。如：We all think it important to learn English well.We all feel it necessary that students should obey school rules. 二、 掌握it在强调句型中的用法：it用于强调句型“it is / was + 被强调部分 + that / who + 句子”中。此句型可以对句子中除谓语外的任何一个成分进行强调。it用于强调句型时，应注意以下几个方面：1强调时间状语时，不要将强调句型与“it is . since / before .”句型混淆了。 强调句型有以下两个典型的特征：1）it不表示具体内容；2）被强调部分是时间或地点状语时，通常在表示时间或地点的名词前面有一个介词。而在“it is . since / before .”句型中，it表示时间。试比较：It is five years since he left home. (it表示时间)It was at five oclock yesterday afternoon that he returned home from Beijing. (强调句型)2强调句型的一般疑问结构为：“is / was it + 被强调部分 + who / that + 句子”。如：Was it in Beijing that you first met her?3强调句型的特殊疑问句形式是：“特殊疑问词 + is / was + it that + 句子”。如：Where was it that you saw him yesterday? 4不管被强调的部分是单数还是复数，it后面只能用单数系动词is / was。如：It was Mike and his sister who were praised at the meeting.5如果被强调部分是原句中的主语，则要注意that或who后面句中的谓语动词要与被强调部分在人称和数上保持一致。如：It is I who I am wrong.三、 it 用于习语中。如：make it 成功，按时到达某地；see to it that . 确保； call it a day今天就到此为止； take it easy 慢慢来；thats it就这样，这就对了；sb. would appreciate it if . 如果某人会感激的; got it明白啦。