新东方在线雅思频道为大家整理雅思写作考试常用的35组句型并提供了例句及解析，每天踏实掌握5个，一周就能全部掌握，大家一起来吧。今天是周五的内容。

　　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 decade or so, practical courses, such as computer and business, have gained tremendous popularity on college campuses.

　　过去十年来，实用性课程诸如电脑和商科在大学中普遍盛行。

　　二十二、Since + S + 过去式，S + 现在完成式。

　　例句：Since the advent of modern urbanization, people have been confronted with the dilemma whether or not they should demolish old houses and buildings that seem to have spoilt the cityscape.

　　自从现代城市化的进程开始之后，人们一直面临着这样一种两难的境地：他们是否应该拆除那些是否有损市容的旧房屋和建筑物。

　　二十三、It pays to + V ~~~ (...是值得的。)

　　例句：It pays to create a fair atmosphere in which both males and females cooperate and compete on an equal footing.

　　创造一个让男女平等合作竞争的良好环境是值得的。

　　二十四、be based on (以...为基础)

　　例句：The progress of thee society is based on harmony.

　　社会的进步是以和谐为基础的。

　　二十五、Spare no effort to + V (不遗余力的)

　　Developed nations should spare no effort to finance their economically disadvantaged counterparts.

　　发达国家应该不遗余力地资助贫国。

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