12.Something as simple as            vegetables in childhood may help to protect you against serious illness in later life.(  )
A.to eatB.eatingC.to be eatingD.eaten

分析 小時候像吃蔬菜這樣簡單的事情也許可以幫助你對抗晚年的嚴(yán)重疾。

解答 答案:B
句中eat vegetables作介詞as的賓語,表示比較對象,要用動名詞形式;句意表達(dá)的是客觀事實(shí),不能用不定式來構(gòu)成,不定式表達(dá)的是未發(fā)生的動作.故選B.

點(diǎn)評 動名詞相當(dāng)于名詞,具備名詞的特征.在句中可以作主語,賓語,表語,定語等.動名詞和現(xiàn)在分詞的構(gòu)成方式一樣,但用法不同.現(xiàn)在分詞具備動詞的特征,有時態(tài)和語態(tài)的變化,學(xué)習(xí)時要注意區(qū)分和掌握.

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