【句型19】It is conceivable that+句子.可想而知……

　　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.

　　【译文】可想而知，知识在我们的一生中扮演着重要的角色。

　　【句型20】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.

　　【译文】夏天很闷热。那就是我不喜欢它的原因。

　　【句型21】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.

　　【译文】过去两年来，我一直忙着准备考试。

　　【句型22】Since+S+过去式，S+现在完成式. 自从……一直……

　　【例句】Since he went to senior high school, he has worked very hard.

　　【译文】自从上高中以来，他一直很用功。

　　【句型23】It pays to+v. ……是值得的

　　【例句】It pays to help others.

　　【译文】帮助别人是值得的。

　　【句型24】be based on 以……为基础

　　【例句】The progress of the society is based on harmony.

　　【译文】社会的进步是以和谐为基础的。

　　【句型25】spare no effort to+v. 不遗余力地

　　【例句】We should spare no effort to beautify our environment.

　　【译文】我们应该不遗余力地美化我们的环境。

　　【句型26】bring home to+sb.+sth. 让……明白……

　　【例句】We should bring home to people the value of working hard.

　　【译文】我们应该让人们明白努力的价值。

　　【句型27】be closely related to... 与……息息相关

　　【例句】Taking exercise is closely related to health.

　　【译文】做运动与健康息息相关。