请英语高手帮我解决两个问题After you______to think of several words in English,then.A.had learned B.have learned C.learn D.are learn这题选C,为什么?能从语法角度解释吗?However,I forgot it______I was playing with my friends.A.when B.because C.if D.though这题选A,为什么不选B?如能解释得明白,感激不尽
问题描述：
请英语高手帮我解决两个问题
After you______to think of several words in English,then.
A.had learned B.have learned C.learn D.are learn
这题选C,为什么?能从语法角度解释吗?
However,I forgot it______I was playing with my friends.
A.when B.because C.if D.though
这题选A,为什么不选B?
如能解释得明白,感激不尽
答
1.从句时态要比主句晚一个时态
2.如果选B的话，because 前要用“，”
答
我只会第二题~
应该是那些转折的词不能同时用两个。既然前面已经有了however,那么后面就不能用because了~
所以就只能选A。。
答
这句话首先是个状语从句,"在你学会用英语思考一些单词之后,然后."
用主将从现,after后是个状语从句,用一般现在是就可以了.
是完形填空中的一句原话,然而,当我正在和朋友们玩的时候我把他忘了.要根据上下文来定when引导的句子在后面做时间状语.