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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 o’clock 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；that’s 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。 |
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