It's time to do sth是固定用time to do sth,还是说名词加to 加do sth 有个这样的语法

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It's time to do sth是固定用time to do sth,还是说名词加to 加do sth 有个这样的语法

是固定用time to do sth

It's time to do sth是固定用time to do sth,还是说名词加to 加do sth 有个这样的语法
It's time to do sth是【固定句型】。不能只说time to do sth。也不是说名词加to 加do sth。

it's time(for sb) to do sth是固定搭配,另外还有另一个相似的搭配,就是it's + 形容词 (for sb) to do sth,意思为对(某人)来说,做某事是很什么的.例:It's important for us to get more physical excerise.对我们来说,多做体育锻炼是很重要的.