1、It is conceivable that + 句子 （可想而知的）
It is obvious that + 句子 （明显的）
It is apparent that + 句子 （显然的）
例句：It is conceivable that knowledge plays an important role in our life.
可想而知，知识在我们的一生中扮演一个重要的角色。
2、That is the reason why ~~~ （那就是……的原因）
例句：Summer is sultry. That is the reason why I don't like it.
夏天很燠热。那就是我不喜欢它的原因。
3、、For the past + 时间，S + 现在完成式……（过去……年来，……一直……）
例句：For the past two years， I have been busy preparing for the examination.
过去两年来，我一直忙着准备考试。
