Question

All his time _______research on Chinese history, he has no time for outdoor activities.

A．devoted to do

B．devoted to doing

C．devoting to doing

D．is devoted to doing

Answer 1

B

試題分析：考查獨(dú)立主格結(jié)構(gòu)。本句在兩個(gè)部分之間缺少連詞，說(shuō)明逗號(hào)前面不是一個(gè)完整的句子，只是一個(gè)短語(yǔ)。All his time devoted to doing…相當(dāng)于一個(gè)原因狀語(yǔ)從句B Because all his time is devoted to doing…；句意：因?yàn)樗�所有的時(shí)間都花在了研究中國(guó)歷史上，所以他沒有時(shí)間參加戶外活動(dòng)。故B正確。
考點(diǎn)：
點(diǎn)評(píng)：當(dāng)分詞做狀語(yǔ)的時(shí)候，如果分詞的邏輯主語(yǔ)與句子主語(yǔ)沒有關(guān)系，就在分詞的前面直接加上邏輯主語(yǔ)，形成獨(dú)立主格結(jié)構(gòu)，該結(jié)構(gòu)在作用上久相當(dāng)于一個(gè)狀語(yǔ)從句。