【英语】关于主谓一致△In1850，about a third of U.S.A.( )covered by forests.A.were B.has been C./ D.was△Half of the class haven't done all of the homework because some ( )really difficult.A is B are为什么third of U.S.A.看作整体，

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【英语】关于主谓一致△In1850，about a third of U.S.A.( )covered by forests.A.were B.has been C./ D.was△Half of the class haven't done all of the homework because some ( )really difficult.A is B are为什么third of U.S.A.看作整体，
【英语】关于主谓一致
△In1850，about a third of U.S.A.( )covered by forests.
A.were B.has been C./ D.was
△Half of the class haven't done all of the homework because some ( )really difficult.
A is B are
为什么third of U.S.A.看作整体，翻译成什么？

【英语】关于主谓一致△In1850，about a third of U.S.A.( )covered by forests.A.were B.has been C./ D.was△Half of the class haven't done all of the homework because some ( )really difficult.A is B are为什么third of U.S.A.看作整体，
D.这里的a third of U.S.A应该看作整体,所以用单数
A.这里的some指的是homework,是不可数名词,所以用单数
补充啦..是【a third of U.S.A应该看作整体】哦,翻译成“美国的三分之一”,整句的意思就是“1850年时,美国的三分之一都被森林覆盖”

关于英语主谓一致题【英语】关于主谓一致△In1850，about a third of U.S.A.( )covered by forests.A.were B.has been C./ D.was△Half of the class haven't done all of the homework because some ( )really difficult.A is B are为什么third of U.S.A.看作整体，关于主谓一致语法英语主谓一致题英语主谓一致练习题主谓一致英语英语主谓一致关于英语主谓一致的问题,应要注意什么? 关于主谓一致的用法关于主谓一致的详解英语什么叫主谓一致? 英语主谓一致怎么表达英语主谓一致注意点英语的主谓一致怎么做问几道英语主谓一致的选择题在英语中,什么是主谓一致? 英语中主谓一致的要点是什么? 英语中关于主谓一致None of them is/are student中是否该用students?