When——(问题出现),they tried hard to find the solution 为什么用“the problem came up”
人气:208 ℃ 时间:2020-02-22 22:40:59
解答
.不然你想用啥?
= =你问的太不清楚了,我只能说因为这样用没有语法错误.= =.come out捏?为什么不行?第一,从时态的角度,主语是problem,所以后面动词不可能是come。至少也得是过去时或者加单三。第二,从短语意思的角度,come up侧重指抽象事物的出现,而come out侧重指人的出现。当然啦,他们两个还有其他的意思,比如接out时可以指出版神马的,那个我就不说了。
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