Question

--- We don’t allow _________ in the library .
--- So we had better _________ outside .

A．smoking , smoking	B．to smoke , smoking
C．to smoke , to smoke	D．smoking , smoke

Answer 1

D

試題分析：對(duì)于allow的用法主要有：1、allow sb. to do sb.允許某人去做某事，2、allow sb doing sth.允許某人做某事,可以表示當(dāng)前可允許做的事或習(xí)慣性動(dòng)作。根據(jù)上下文有時(shí)sb可以省略。故排除BC；had better do sth“最好做某事”，所以本題選D。
點(diǎn)評(píng)：對(duì)于allow經(jīng)常用的是allow sb to do，所以許多學(xué)生會(huì)受其影響，而用to do；對(duì)于固定用法，需要加強(qiáng)記憶。