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。