推 chiangnitw: 2 by是介系詞不能加句子 08/04 02:05
→ chiangnitw: 1是與未來事實相反的假設 08/04 02:06
推 orfan: be to V用法這板有討論過 /be to V 搜題目一樣的文章 08/04 06:00
→ orfan: 是說這用法真是百考不膩... 08/04 06:00
推 fakeID: 這跟假設語氣無關。 08/04 06:10
1.By 1980, they will have to produce at least 20 milion barrels of oil
a day if the West ______.
A.is to avoid a crippling energy crisis
B.avoids a crippling energy crisis
ANS:A
想請問為什麼不能用B呢？兩者的差別在哪裡呢？
2.I could not finish the homework ____.
A.by he had come
B.until he has come
c.when he comes
D.before he came
ANS:D
這題想請問為什麼不能使用A～
謝謝板上英文高手的解答！！
關於時式的用法好混亂還請大家不吝賜教！
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