Define It at Dictionary.com

日期:2017-07-27 16:37 来源:网络整理

pronoun (subjective or objective)

1.

refers to a nonhuman, animal, plant, or inanimate thing, or sometimes to a small baby: it looks dangerous, give it a bone

2.

refers to an unspecified or implied antecedent or to a previous or understood clause, phrase, etc: it is impossible, I knew it

3.

used to represent human life or experience either in totality or in respect of the present situation: how's it going?, I've had it, to brazen it out

4.

used as a formal subject (or object), referring to a following clause, phrase, or word: it helps to know the truth, I consider it dangerous to go on

5.

used in the nominative as the formal grammatical subject of impersonal verbs. When it functions absolutely in such sentences, not referring to any previous or following clause or phrase, the context is nearly always a description of the environment or of some physical sensation: it is raining, it hurts

6.

(used as complement with be) (informal) the crucial or ultimate point: the steering failed and I thought that was it

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