求问一个考研英语的长句.It matters that because theory suggests that maximum sustainable yield that can be cropped from a fishery comes then the biomass of a target species is about 50% of its original levels.有两点困扰的,一个是 co
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求问一个考研英语的长句.It matters that because theory suggests that maximum sustainable yield that can be cropped from a fishery comes then the biomass of a target species is about 50% of its original levels.有两点困扰的,一个是 co
求问一个考研英语的长句.
It matters that because theory suggests that maximum sustainable yield that can be cropped from a fishery comes then the biomass of a target species is about 50% of its original levels.有两点困扰的,一个是 come到底是修饰什么的?如果是yield,那么crop修饰的又是什么?还有就是level为什么要带s?
求问一个考研英语的长句.It matters that because theory suggests that maximum sustainable yield that can be cropped from a fishery comes then the biomass of a target species is about 50% of its original levels.有两点困扰的,一个是 co
你这个句子写的不对啊,网上的原文是这样的：
That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels.
【译文】 这一点很重要,因为理论表明,当目标鱼种的生物量大致降至最初水平的50％时,渔场才能收获最大的持续捕鱼量.
【析句】 That matters是全句的主干,后面是一个表示原因的从句,而从句又包含一个表示时间的状语从句.
That(主语) matters(谓语） because.original levels（原因状语从句）.
原因从句中：theory（主语） suggests（谓语） that.original levels（宾语从句）.
宾语从句中：maximum sustainable yield (主语） that can be cropped from a fishery（定语从句,修饰yeild) comes(谓语） when the biomass of a target species is about 50% of its original levels（时间状语从句）.
所以comes 是yield的谓语,that can be cropped from a fishery是yield的定语,that指代yield,就是the yield can be cropped from a fishery,在渔场里能够收获的产量
comes：来临.comes when...：在...时候来临.
用levels是因为不同物种的初始水平是不同的,所以在谈到各种渔种时,最初水平是复数.