Question

Joan stood outside a shopping mall for a long time, as if ________ somebody

1. A.
   to wait for
2. B.
   waiting for
3. C.
   waited for
4. D.
   having waited for

Answer 1

B
試題分析：考查非謂語(yǔ)動(dòng)詞。Joan和wait是主謂關(guān)系，用現(xiàn)在分詞表主動(dòng)和伴隨狀況，排除C；動(dòng)詞不定式表示目的，不符合語(yǔ)境，排除A；having done是現(xiàn)在分詞的完成時(shí)，表示動(dòng)作有先后，這里的stood和wait是同時(shí)發(fā)生的，排除D。waiting for相當(dāng)于he was waiting for。故選B。
考點(diǎn)：考查非謂語(yǔ)動(dòng)詞