[文法] 請教2題文法 文法不好

[edison0911 (ED)]

 ________ a solution to the problem of a future energy shortage,but
 it also helps to eliminate environmental pollution.

    (A)The photovoltaic cell not only provides
    (B)Not only does the photovoltic cell provide
    (C)The photovoltaic cell provides not only

答案為何是 B ,why A 不行




 The United States and the former Soviet Union began to develop higher
 military technology _______ in 1945

   (A)shortly after World War two ended
   (B)after shortly World War two ended
   (C)after World War two ended shortly

答案是為何是 A ,why C 不行

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推 nepho:第一題, not only but also連接的對象是子句
→ nepho:不是(A)裡面的provides和另一個動詞
→ nepho:也就是說沒有it就是(A)
→ nepho:第二題(C)的shortly in 1945和文意不合
→ nepho:修飾began或ended都沒邏輯
推 edison0911:THX
推 edison0911:再請問一下為何沒有it就是(A) 不是很懂