2013年12月英语六级作文模拟仿真训练（20）
一些特殊句型十一、On no account can we + V ~~~ （我们绝对不能...）
例句：On no account can we ignore the value of knowledge.
十二、It is time + S + 过去式 （该是...的时候了）
例句：It is time the authorities concerned took proper steps to solve the traffic problems.
十三、There is no one but ~~~ （没有人不...）
例句：There is no one but longs to go to college.
十四、be + forced/compelled/obliged + to + V （不得不...）
例句：Since the examination is around the corner, I am compelled to give up doing sports.
十五、It pays to + V ~~~ （...是值得的。）
例句：It pays to help others.
十六、Spare no effort to + V （不遗余力的）
例句：We should spare no effort to beautify our environment.
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