s 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。
二十一、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。
二十二、since + s + 过去式,s + 现在完成式。
例句:since he went to senior high school, he has worked very hard. 自从他上高中,他一直很用功。
二十三、it pays to + v(...是值得的。)
例句:it pays to help others.
帮助别人是值得的。
二十四、be based on (以...为基础)
例句:the progress of the society is based on harmony.
社会的进步是以和谐为基础的。
二十五、spare no effort/expense to + v (不遗余力的)
例句:we should spare no effort/expense to beautify our environment.
我们应该不遗余力的美化我们的环境。
二十六、bring home to + 人
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