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(6) 非謂語動(dòng)詞作補(bǔ)足語:

不定式和分詞可以作賓語補(bǔ)足語和主語補(bǔ)足語。有些動(dòng)詞后只跟不定式作賓語補(bǔ)足語或主語補(bǔ)足語,如:ask, tell, order, want, wish, warn, allow, advise, permit, forbid等。

有些動(dòng)詞后既可以跟不定式又可以跟分詞作補(bǔ)足語,但意義不同:

(1) 在see, hear, watch, feel, observe, listen to, notice等動(dòng)詞后,用現(xiàn)在分詞表示動(dòng)作正在發(fā)生(即處于發(fā)生的過程中),用不定式表示動(dòng)作發(fā)生了(即動(dòng)作全過程),注意主動(dòng)句中不定式不帶to,但在 被動(dòng)結(jié)構(gòu)中必須帶to。如:

When she saw him coming, she turned around and walked quickly toward the corner.

The thief was seen to slip into the house just now.

(2) have sb. do表示主體使客體干什么事;have sb. \ sth. doing表示主體使客體處于某種狀態(tài); have sth. done表示動(dòng)作是別人做的或與主體意志無關(guān)。如:

At first she wasn’t willing to have her daughter-in-law go out to work.

They had to have all the lights burning all day long because of poor light in the room.

We must have the machine repaired as soon as possible.

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