[文法] 幾題文法題~

[lovelowrys ()]

手邊有幾題文法題,想要詢問一下,請版友幫我分析一下

謝謝: )

1. If Al Gore ______ president of the U.S. in 2000,American politics

   would be quite different today.

   (A) became (B) should become (C) had become (D) were to become

  此題答案是 (C), 可是"would be.."的假設法怎麼會是had+pp.呢?

2. The White House Task Force on Childhood Obesity released 70

   recommendations on ______ the U.S. could reduce its obesity

   numbers from the current rate of 20% to 5% by 2030.

   (A) that (B) when (C) what (D) how

   答案為(D),為何不能選(A)呢?

3. Broken down by race, about 40 percent of U.S.-born Asians now

   marry whites---a figure ______ since 1980.

   (A) changing (B) changed  (C) unchanging (D) unchanged

   答案(D),那(B)又為何無法解釋呢?

4. Up the road came a sound of creaking axles, and then a slow cloud of dust,

   and then ________ John Smith and his wife.

  (A) a bearing bull-cart  (B) a bull-cart bearing

  (C) a bull-cart bear  (D)a bull-cart being born

  答案(B)

  問題有點繁多,感謝版上各位高手解惑一下, 非常感謝: )

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