A：My advice would be to finish it at once.
      我的建議是立刻做完。

B：It’s unnecessary.
      B：沒必要。

B：How much (did you pay/ did it cost/ was it)?
      （你花了/付了/它是）多少錢？

A：$14,000.
      1萬4千。

B：Yes, it seems to be (working fine/ operating/ functioning properly).
      是的，好像（有用了/可以運行了/可以正常使用了）。

A：Great.
      太好了。

1. 它(指物體、動物或上文已提及的其他事物)
    You use it to refer to an object, animal, or other thing that has already been mentioned.

    e.g. He saw the grey Land-Rover down the bypass. It was more than a hundred yards from him...
           他看見那輛灰色的路虎越野車停在不遠處的邊道上,離他一百碼開外。
    e.g. It's a wonderful city, really. I'll show it to you if you want...
           這真是一座很棒的城市,如果你愿意的話我領(lǐng)你看看。

2. (指小孩或嬰兒)它
    You use it to refer to a child or baby whose sex you do not know or whose sex is not relevant to what you are saying.

    e.g. She could, if she wanted, compel him, through a court of law, to support the child after it was born...
           如果她愿意,她可以通過法庭強制他在孩子出生以后撫養(yǎng)孩子。
    e.g. He threw the baby high in the air and it stopped crying.
           他把孩子向空中高高拋起,孩子就停止了哭鬧。

3. (籠統(tǒng)指代剛描述過的情景)
    You use it to refer in a general way to a situation that you have just described.

    e.g. He was through with sports, not because he had to be but because he wanted it that way...
           他放棄了體育運動,不是因為被迫而是出于自愿。
    e.g. Antonia will not be jealous, or if she is, she will not show it.
           安東尼婭不會嫉妒,即便嫉妒,她也不會表現(xiàn)出來。

4. (用于某些名詞、形容詞、動詞前說明對某情況的感受、觀點)
    You use it before certain nouns, adjectives, and verbs to introduce your feelings or point of view about a situation.

    e.g. It was nice to see Steve again...
           再次見到史蒂夫真是太好了。
    e.g. It's a pity you never got married, Sarah...
           薩拉,你沒結(jié)過婚真是遺憾啊。

5. (用于被動句中引出一個情況或事件)
    You use it in passive clauses which report a situation or event.

    e.g. It has been said that stress causes cancer...
           據(jù)說壓力會引發(fā)癌癥。
    e.g. Yesterday it was reported that a number of people had been arrested in the capital...
           昨天據(jù)報道有很多人在首都被捕。

6. (與動詞連用,作形式主語或賓語)
    You use it with some verbs that need a subject or object, although there is no noun that it refers to.

    e.g. Of course, as it turned out, three-fourths of the people in the group were psychiatrists...
           當(dāng)然,結(jié)果是那群人中 3/4 是精神病學(xué)家。
    e.g. I like it here...
           我喜歡這里。

7. (用作 be動詞的主語,指鐘點、星期、日期)
    You use it as the subject of 'be', to say what the time, day, or date is.

    e.g. It's three o'clock in the morning...
           現(xiàn)在是凌晨 3 點整。
    e.g. It was a Monday, so she was at home...
           那天是星期一,因此她在家里。

8. (用作系動詞的主語，描述天氣、光線或溫度)
    You use it as the subject of a link verb to describe the weather, the light, or the temperature.

it的近義詞

    e.g. It was very wet and windy the day I drove over the hill to Milland...
           那天風(fēng)雨交加,我開車翻過小山去米蘭德。
    e.g. It's getting dark. Let's go inside...
           天色暗下來了,我們進去吧。

9. (尤用于剛接通電話時詢問、告知身份)
    You use it when you are telling someone who you are, or asking them who they are, especially at the beginning of a phone call. You also use it in statements and questions about the identity of other people.

    e.g. 'Who is it?' he called. — 'It's your neighbor.'...
           “是誰啊?”他問道?！笆悄愕泥従印！?br />    e.g. Hello Freddy, it's only me, Maxine.
           你好,弗蕾迪！是我,瑪克辛。

10. (與動詞 be 連用，強調(diào)突出某物)
      When you are emphasizing or drawing attention to something, you can put that thing immediately after it and a form of the verb 'be'.

      e.g. It's really the poor countries that don't have an economic base that have the worst environmental records...
             確實是那些沒有經(jīng)濟基礎(chǔ)的窮國的環(huán)境記錄最差。
      e.g. It was the country's rulers who devised this system...
             是該國的執(zhí)政者創(chuàng)造了這一體制。

11. 并不是因為/不僅僅因為
      You use it in expressions such as it's not that or it's not simply that when you are giving a reason for something and are suggesting that there are several other reasons.

it

      e.g. It's not that I didn't want to be with my family...
             并不是我不想和家人在一起。
      e.g. It's not just that a gulf exists in living standards — there's a psychological ravine.
             不僅僅是生活水平上存在巨大差異，心理上也有鴻溝。

12. 自以為很了不起
      If you say that someone thinks they're it, you mean that they think they are better or more important than they really are.

13. if it wasn't for -> see See be