Question

I don’t know if my uncle  _______ . If he _______ , I will be very happy .

A．comes; will come	B． will come; will come
C．comes; comes	D．will come; comes

Answer 1

D

I don’t know if my uncle  _______中含有 if引導(dǎo)的賓語(yǔ)從句，句意：我不知道我的叔叔是否回來(lái)，應(yīng)該用一般將來(lái)時(shí)；If he _______ , I will be very happy中 if引導(dǎo)的是條件只狀語(yǔ)從句，主句I will be very happy用一般將來(lái)時(shí)，從句要用一般現(xiàn)在時(shí)。所以選D.