Question

I don't know if he ________. He will come if it ________.

1. A.
   comes. won't rain
2. B.
   will come, doesn't rain
3. C.
   comes, doesn't rain
4. D.
   will come, won't rain

Answer 1

B
根據(jù)英語動詞時態(tài)的呼應(yīng)規(guī)律，第一句中主句為一般現(xiàn)在時，賓語從句表示將來的動作要用一般將來時；第二句中主句是將來時，條件狀語從句要表示將來的動作要用一般現(xiàn)在時代替一般將來時．