Question

Having lost his key，________.

A．he couldn’t enter the room	B．the gatekeeper offered to help
C．the door was forced open	D．the room couldn’t be entered

Answer 1

A

試題分析：考查句子結(jié)構(gòu)：逗號(hào)前面是現(xiàn)在分詞的完成式做狀語(yǔ)，說(shuō)明句子的主語(yǔ)應(yīng)該是lost his keys的邏輯主語(yǔ)，應(yīng)該是he，句意：丟了鑰匙后，他不能進(jìn)入房間。選A。
點(diǎn)評(píng)：用非謂語(yǔ)動(dòng)詞做狀語(yǔ)，說(shuō)明主從句的主語(yǔ)一致的時(shí)候，做題時(shí)可以在四個(gè)選項(xiàng)中找非謂語(yǔ)動(dòng)詞的邏輯主語(yǔ)，往往邏輯主語(yǔ)對(duì)了，答案就自然出現(xiàn)了。