they spent roo much time in writing the report为什么是用spent

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因为句子是过去式，所以用spent。they spent roo much time in writing the report意思是：他们花了很多时间写报告。

重点词汇：spent

英［spent］

释义：

adj.用过已废的，失效的；筋疲力尽的。

v.用，花（钱）；花费，度过（一段时间）；用尽，耗尽（spend的过去式和过去分词形式）。

短语：

spent fuel［核］乏燃料；燃烧过的燃料；废燃料。

例句：

用作形容词（adj）

He fired a shot，then ejected the spent cartridge.

他开了一枪，然后倒出了用过的弹夹。

At the end of the hot day the spent workers slept under a shady tree.

经过炎热的一天，筋疲力尽的工人们在树荫下睡着了。

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邱县18871592757： spent和paid的用法 还有cost和took的用法 - ？
逄瑗尼美： take spend cost pay的用法都可以表示“花费”,但用法却不尽相同. spend的主语必须是人, 常用于以下结构: (1) spend time /money on sth. 在……上花费时间(金钱).例:I spent two hours on this maths problem. 这道数学题花了我两...

邱县18871592757： They spend two hours on their work.(保持句意不变) They spend two hours ( ) on their work.？
逄瑗尼美： doing spend用法为spend sometime doing something或spend some money doing something.spend过去式为spent.句中句意为他们做了两小时工作.do work,做工作,所以可以doing

邱县18871592757： 填单词 They spent their - ----- - holiday in Sanya in July. - ？
逄瑗尼美： 填单词: They spent their _______ holiday in Sanya in July. 应填:summer 解析:summer holiday 暑假

邱县18871592757： they spent a couple of days and nights on the farm of what would be considered a poor family.？
逄瑗尼美： what连接前后两个部分,既是of的宾语,也引导后面的句子 如果是which只能起其中的一个作用,which引导从句的话前面需要有先行词 句子可以改为they spent a couple of days and nights on the farm of the situation(可以用一个更适合的词,暂时没想到) which would be considered a poor family.

邱县18871592757： They spent two hours - __ - with each other. - ？
逄瑗尼美：[选项] A. talking B. talked C. to talk D. to be talked

邱县18871592757： they spent as much time as they could___their lessons - ？
逄瑗尼美：[选项] A. preparing B. prepare C. to prepare D. prepared 为什么?

邱县18871592757： they spent a couple of days and nights on the farm of what would be considered a poor family.为什么用what而不用which表介词+which用法 - ？
逄瑗尼美：[答案] what连接前后两个部分,既是of的宾语,也引导后面的句子如果是which只能起其中的一个作用,which引导从句的话前面需要有先行词句子可以改为they spent a couple of days and nights on the farm of the situation(可以...

邱县18871592757： They spent a couple of days and nights on the farm of what would be considered a poor family. 有哪 - ？
逄瑗尼美： 他们在一个看似贫困的家庭的农场里度过了几个日夜 the farm of ...意思是谁的农场,what 引导一个从句,被动语态,词组是consider sth. sth认为某事是什么样,这里的意思是被认为是一个贫困的家庭

邱县18871592757： They spent much of their time knee - deep in mud.knee - deep是齐漆的意思,They spent much of their time knee - deep in mud.knee - deep是过漆的意思,翻译是... - ？
逄瑗尼美：[答案] knee-deep这里是形容泥深到膝盖. 意思是 他们在齐膝的泥沼里呆了好一阵子.

邱县18871592757： they spent a large number money rebuilding the city 改错把number改成quantity,为什么number后还有of - ？
逄瑗尼美：[答案] a number of 后接可数名词. 希望能帮到你.