非謂語動詞主要包括to do, -ing和-ed三種形式，可是其用法非常廣泛，它不僅是高考單項(xiàng)選擇題測試的一個重點(diǎn)，而且也是完形填空、閱讀理解、短文改錯的重要考查內(nèi)容。為了能更好地掌握非謂語動詞的用法，筆者在教學(xué)實(shí)踐中總結(jié)出十條實(shí)用的解題原則，并且還用相關(guān)的題目來解釋這些原則。根據(jù)這些原則，相信同學(xué)們可以輕松地應(yīng)對非謂語動詞。

　　原則二：不及物動詞無-ed形式非謂語動詞，及物動詞有賓語時用-ing形式，無賓語時用-ed形式

　　例3. ____________ in the mountains for a week, the two students were finally saved by the local police.

　　A. Having lost B. Lost C. Being lost D. Losing

　　解析：lose為及物動詞，現(xiàn)在后面沒有賓語，所以用-ed形式，答案為B。

　　例4. __________, I really believe that I’d prefer not to make any change now.

　　A. Considered all the possibilities B. Taking all the possibilities into consideration

　　C. Taken all the possibilities into consideration D. Giving all the possibilities

　　解析：把。。�？紤]進(jìn)來結(jié)構(gòu)為take sth into consideration，現(xiàn)在take后面有賓語all the possibilities，所以用-ing形式，答案為B。