13.He was sitting there,lost (lose) in thought.

分析 他坐在哪兒,陷入了沉思.

解答 答案是lost.本題考查語境中選用所給詞的適當形式.be lost in thought  陷入沉思;英語中很多類似的"be+過去分詞+介詞/to do/that從句"的結(jié)構(gòu)都是說明邏輯主語的狀態(tài),所以只要去掉be動詞就可在句中充當定語、狀語或補語;本題中需要分詞做狀語,說明主語he的狀態(tài),故答案是lost.

點評 本題是要求用所給詞的適當形式填空,解題時首先考慮句中需要的詞性;其次,如果是謂語動詞關(guān)注時態(tài)、語態(tài)和數(shù)的變化;如果是非謂語動詞要聯(lián)系非謂語的基本用法判斷非謂語的形式;如果是名詞關(guān)注單復(fù)數(shù).

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