该句型译成汉语“直到……才”,可以说是的强调形式。It was not until she took off her dark glasses that I realized she was a film star. =Not until she took off her dark glasses did I realize she was a film star. =I didn’t realize she was a famous film star until she took off her dark glasses.
3. It is clear (obvious, true, possible, certain) that….
该句型中it是形式主语,真正的主语是that引导的主语从句,常译为“清楚(显然、真的、肯定)”是主语从句最常见的结构。
It is very clear that he’s round and tall like a tree.
=That he’s round and tall like a tree is very clear.
4. It is important (necessary, right, strange, natural…) that…
该句型和上一句同属一个句型。由于主句中的形容词不同,that后的从句中要用虚拟语气(should 动词原形)should 可以省去。建议记住该句型中的形容词。
It is important that we (should) learn English well.
It is necessary that he (should) remember these words.
5. It is said (reported, learned…) that…
该句型中的it 仍是形式主语,真正的主语是that 引导的主语从句。该结构常译为“据说(据报道,据悉……)
It is said that he has come to Beijing.