作业帮He spends several hours on volunteer work each week改为同义句Things are (working)(out) quite well里面为什么不是worked out来表被动?The volunteer work（）（）several hours each week为什么是takes him而不用cost him
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He spends several hours on volunteer work each week改为同义句Things are (working)(out) quite well里面为什么不是worked out来表被动?The volunteer work（）（）several hours each week为什么是takes him而不用cost him
He spends several hours on volunteer work each week改为同义句
Things are (working)(out) quite well里面为什么不是worked out来表被动?
The volunteer work（）（）several hours each week为什么是takes him而不用cost him
He spends several hours on volunteer work each week改为同义句Things are (working)(out) quite well里面为什么不是worked out来表被动?The volunteer work（）（）several hours each week为什么是takes him而不用cost him
It takes him several hours to do volunteer work each week.
work out 表示“进展”是不及物动词,不能用被动语态.
The volunteer work（takes ）（him）several hours each week.
意思是：他每个星期花几个小时的时间做义工.
take 用来表示 花时间
cost 表示 花钱,不能表示 花时间
首先，楼主貌似是高中生，语法问题不要急，慢慢积累就好
1, sth.take sb. sometime (to do)固定搭配，另外关于cost和spend三者区别如下：
take 还用于 it takes sb ... to do sth句型，仅指花费时间（three hours等）用it作形式主语
spend用于sb spend...on sth或者sb spend.....
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首先，楼主貌似是高中生，语法问题不要急，慢慢积累就好
1, sth.take sb. sometime (to do)固定搭配，另外关于cost和spend三者区别如下：
take 还用于 it takes sb ... to do sth句型，仅指花费时间（three hours等）用it作形式主语
spend用于sb spend...on sth或者sb spend...in doing sth（in可以省略），spend的主语必须是人，可以指花费时间、也可以指花费金钱
cost用于 sth costs sb sth，主语必须是物，多指花费金钱，少数情况可指花费时间、气力，有时表示成本的消耗
注：cost 有时也用于时间，但通常只用于笼统时间(一般不用于具体明确的时间)。如：
Making experiments like this costs much time and labour. 做这样的实验要花很多时间和劳力。
本题中具体的几小时只能用take.
2,显然不是被动语态，这里things做主语，work做谓语，这句话是日常用语，非常常用，意思是目前情况很好
希望能帮你，有问题可以找我！
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