Since China has been a member of WTO,English is ____useful than before.A.more B.most C.much D.very答案是A.为什么不能选C?

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SinceChinahasbeenamemberofWTO,Englishis____usefulthanbefore.A.moreB.mostC.muchD.very答案是A.为什么不能选C?Sin

Since China has been a member of WTO,English is ____useful than before.A.more B.most C.much D.very答案是A.为什么不能选C?
Since China has been a member of WTO,English is ____useful than before.
A.more B.most C.much D.very
答案是A.为什么不能选C?

Since China has been a member of WTO,English is ____useful than before.A.more B.most C.much D.very答案是A.为什么不能选C?
有than,表示比较级,要用形容词性的比较级形式 more useful
much表示程度

than before.
是比较级。用C没有比较了。
useful ---要变成：more useful

more，因为后面有than, 比较级吗。

因为后面有than，必须用比较级

much是用来修饰不可数名词的。

要用比较级，useful 比较级为more useful（更有用）。而much用来表示程度，放在比较级前面much more useful（有用得多）

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more useful 是更有用的意思。这句话的意思是说，自从中国成为WTO的一员，英语比以前更有用了。
more······than before，意思是“比以前更······”，这是more···than····搭配的用法，表示比较。
而much有以下几种意思：
副词：1. 非常, 很, 十分2. 差不多, 几乎3. 很多地, 很大地, 程度极高地4. 很大程度上, 常常
形容词：1. 许多的, 大量的
介词：1. 很多, 大量, 很大程度2. 很好的东西3. （与不可数名词连用，尤用于否定句；或与 how 连用以询问数量；也可与 as、so 和 too 连用）许多，大量，多少
much不能表示“更····”的意思，在这里也不能体现出比较的意思。

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