作业帮it做形式主语时,应注意什么.
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/21 12:32:53
it做形式主语时,应注意什么.
it+be +形容词+不定式
It is easy to criticize others.批评别人是容易的.it 在句子中做形式主语,真正主语是不定式to criticize others.
it+be+名词+不定式（to do ）
It was his duty to take care of the orphans.照顾孤儿是他的职责.
it+be+名词后面也加动名词doing,如It is no use\good studying for an exam at the last minute.临时抱佛脚来应考是没用的\没好处.
it+be+介词短语+不定式
It was beyond me to say why.我无法说明原因.
it+及物动词+宾语+不定式
It cost 100 dollar to repair the car.修车花了一百美元.
It is easy to criticize others.批评别人是容易的.it 在句子中做形式主语,真正主语是不定式to criticize others.
it+be+名词+不定式（to do ）
It was his duty to take care of the orphans.照顾孤儿是他的职责.
it+be+名词后面也加动名词doing,如It is no use\good studying for an exam at the last minute.临时抱佛脚来应考是没用的\没好处.
it+be+介词短语+不定式
It was beyond me to say why.我无法说明原因.
it+及物动词+宾语+不定式
It cost 100 dollar to repair the car.修车花了一百美元.