语法综合练习641.Mozart,( ) still a child,began composing wonderful music.A.before B.since C.while D.for答案为C 请解释一下理由,谢谢

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语法综合练习641.Mozart,()stillachild,begancomposingwonderfulmusic.A.beforeB.sinceC.whileD.for答案为C请解释一下理由,谢

语法综合练习641.Mozart,( ) still a child,began composing wonderful music.A.before B.since C.while D.for答案为C 请解释一下理由,谢谢
语法综合练习6
41.Mozart,( ) still a child,began composing wonderful music.
A.before B.since C.while D.for
答案为C 请解释一下理由,谢谢

语法综合练习641.Mozart,( ) still a child,began composing wonderful music.A.before B.since C.while D.for答案为C 请解释一下理由,谢谢
Mozart,(while still a child),began composing wonderful music
当他还是个孩子的时候,莫扎特就开始创作精彩的音乐作品了!
只有while有“当……的时候”的意思!

D
as引导定语从句,指代后边的整句we have worked out the production plan,as又作is often the case主句的主语。
情况总是这样,我们已经制定出工作计划。
常用还有:
as is known to all 众所周知
as is shown above 正如上面显示的那样