Question

I had to          my little sister when my mother was not at home.

A．look for

B．look after

C．look at

D．look into

Answer 1

B

試題分析：本題的含義是當(dāng)我的母親不在家的時(shí)候，我得照顧我的妹妹，look after表示照顧的含義，故本題選B。其它短語(yǔ)的意思分別為look for 尋找，look at看一看，look into窺視，意思不符合句意，故不選。
點(diǎn)評(píng)：在英文中l(wèi)ook加不同的介詞構(gòu)成不同的短語(yǔ)，表示不同的意思，look at 看一看，look for尋找，look after 照顧，look into窺視，在實(shí)際使用時(shí)，應(yīng)注意它們所表示的含義和區(qū)別。