完整版it用法总结(高考必看)
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“这是什么?”“是一种新机器”。
• Nothing is wrong, is it? 没出什么问题， 是吗?
二、it 作非人称代词的用法
1. 基本用法 it 作非人称代词的用法，主要用于指时间、距离、
价值、天气、气候及温度等自然现象。
1. It is Friday today. date 2. It was very cold last Monday. weather
的事。
• It’s unknown when he will come. 他什么时候来
还不知道。
2. 用作形式主语的的重要句型
(1) it 作形式主语替代不定式 构成”It + be + adj. for (of) sb to do sth“ 某人做某
事……
It is hard for him to make up his mind. 他很难下
2) It is not until + 被强调的部分+ that…
该句型也是强调句型，主要用于强调时间状语， 译成“直到…才…”，可以说是not… until… 的强 调形式。
It was not until she took off her dark glasses that I realized she was a famous film star.
• (4) It takes sb. + 时间段 + to do sth. 某人 做某事花了……时间
• It takes years to master a new language. 要
花多年的时间才能掌握一门新的语言。
【Tip】此句型可以有以下多变种变体：
It took me an hour to write the letter.
定决心。
It was foolish of her to say such a thing. 她说那
样的话，真是太蠢了。 【Tip】介词 of 与 for 的区别是： of 用于指某人的性格、属性、特征等，介词 for表示对象，意为“对……来说”
2) It is V-ed + that
① It is said (reported, learned) + that… It is said that he has come to Beijing.
一、it 作人称代词的用法
• 1. 指事物 • 作为人称代词，it 可以除人以外的一切事
物或动物。如： • I dropped my watch and it broke. 我
把手表掉在地上摔坏了。 • It’s hard work, but I enjoy it. 工作很
辛苦，可是我乐意干。 • “Where is the dog?” “It’s in the
3) It is a pity (a shame) that…
That 后的从句一般用虚拟语气 (should+V原形), should 可以省略. 表示出乎意料，译为 ”竟然“。 没有这种意义时，则不用虚拟语气。 It is a pity that such a thing (should) happen in your class.
三、it用作形式主语
1. 基本用法 • 当不定式、动名词、从句等复杂成分用作句子主
语时，为保持句子平衡，通常把真正的主语放在 句末，而在句首使用形式主语it。如：
• It’s very important to remember this. 记住这
一点很重要。
• It’s hard work climbing mountains. 爬山是费劲
作选择。
(6) it look (seem, appear, happen, occur) that [as if]… 似乎……
• It seemed as though he didn’t recognize me. 他似乎没认出我来。
• It happened that I was out when he called. 他 打电话时我碰巧不在家。
• See to it that you’re not late again. 注意千万
不要再迟到。
• Look to it that this doesn’t happen again. 注意
不要再发生这种事。
• You may rely on it that he’ll come to meet you.
四、it用作形式宾语
1. 基本用法 • 当不定式、动名词、从句等复杂成分用作宾语且
其后跟有宾语补足语时，通常会在宾语补足语前 使用形式宾语，而将真正的宾语移至句末。 • 其基本结构为“动词+it+宾语补足语+不定式(动 名词或从句)”。如：
• I find it difficult to do the job well. 我发现做
• I’d prefer it if I didn’t have to do so much work. 要是我不必做那么多工作，好就太好了。
【说明】能用于此结构的动词不多，常见的有 enjoy, hate, love, like, dislike, appreciate, prefer 等。
(3) 动词 + prep + it + that-从句。如：
=The letter took me an hour (to write). =I took an hour to write the letter.
(5) It is up to sb to do sth. 该由某人做某事 • It’s up to you to to make the choice. 得由你来
temperature
2. 用于某些句型
• It’s time for sth.I该t is 做time某for事bre了akf。ast. • It’s time to do Ist tisht.im该e to做ha某ve 事brea的kfa时st. 候了。 • It’s time for Istbis ttiomedfoor ussthto.h某ave人bre该ak干fast某. 事了。 • It’s (about / high) time + that-从句. 某人该做某事了。
你放心，他会来接你的。
• I can’t answer for it that he will come. 我不能
保证他会来。 【说明】能用于此结构的动词不多，常见的有see
to, look to, insist on, stick to, depend on, answer for 等。
• (4) 动词 + it + 介词短语+ that-从句。如：
• 【说明】在答语中，常用来指本人，如 说 It’s me。
源自文库
• 3. 代替某些代词
• 代词 it 还可用于代替指示代词this, that 以及复合不定代词 something, anything, nothing等。如：
• “What’s this?” “It’s a new machine. ”
bedroom. ” “狗在哪?”“在卧室里”。
• 2. 指人
• it 指人主要用于指不性别不明的婴儿或用 于确认某人的身份。如：
• Is it a boy or a girl? 是男孩还是女孩?
• There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。
soon resign. 据传闻，国防部长不久就要辞职。 【说明】能用于此结构的动词不多，常见的有 have,
take, put, like 等。
• (2) 动词 + it + when (if)-从句。如：
• I dislike it when you whistle. 我不爱听你吹口哨
。
• We really appreciate it when she offered to help. 她来帮忙了，我们十分感激。
好这件事不容易。
• I think it best that you should stay here. 我认
为你最好住这儿。
• We think it no use complaining. 我们认为抱怨
是没有用的。
2. 用作形式宾语的几个特殊结构 (1) 动词+ it + that-从句。如：
(7) If it were not for… / If it hadn’t been for… 若不是因为……
• If it were not for their help, we couldn’t have got over the difficulties. 要不是他们帮助，这 些困难我们不克服不了的。
3. It is about 8:30 now. time
distance
4. It is about 25km from Linquan to Fuyang.
5. It lies in the south of Anhui. place
6. It is 40°C ! You got a high fever!
② It is suggested ( ordered, demanded, insisted, commanded) + that … 从句中的过去分词是表示请求，建议，命令等词 时， that后的从句要用虚拟语气(should + V原 形). Should可以省略。译为“据建议；有命令…”
It is suggested that the meeting (should) be put off.
• I owe it to you that I am still alive. 多亏 有你我才仍然活着。
• I took it for granted that he would help us. 我认为他会帮助我们的。
【说明】能用于此结构的动词不多，常见的 有take it for granted, bring it to sb’s attention, owe it to sb 等。
(从句谓语用过去式，有时也用“should+动词原 形”) • It’s first (seconItdis)thteimfirest t+imtehI’avet-b从een句he.re某. 人第几次干某 事。(从句谓语用现在完成时)
It is two weeks since I saw him
• It’s + 时间段 +It'sstienncyeea.r自s be从for…e I g…rad有uat一ed.段时间了。 • It’s + 时间段It+'s tbeneyfoearres .th过at I多've 长lived的he时re f间or 才… it’s=it was • It‘s + 时间段It w+astthean ty.ea…rs a多go 久whe了n I graduated • It's + 时间段 + when ...是在某个时刻
• I like it that you came. 你来了，我很高兴。 • I take it (that) he will come on time. 我认为他
会准时来的。
• You can put it that it was arranged before. 你
可以说这是以前安排的。
• Rumor has it that the defence minister will
五、用于强调句型中
1) It + be+被强调部分 + that/who (a person) 从句 I met Tom in the park yesterday. 1) It was I who met Tom in the park yesterday. 2) It was Tom who I met in the park yesterday. 3) It was in the park that I met Tom yesterday. 4) It was yesterday that I met Tom in the park.
= Not until she took off her dark classes did I realize she was a famous film star.
• Nothing is wrong, is it? 没出什么问题， 是吗?
二、it 作非人称代词的用法
1. 基本用法 it 作非人称代词的用法，主要用于指时间、距离、
价值、天气、气候及温度等自然现象。
1. It is Friday today. date 2. It was very cold last Monday. weather
的事。
• It’s unknown when he will come. 他什么时候来
还不知道。
2. 用作形式主语的的重要句型
(1) it 作形式主语替代不定式 构成”It + be + adj. for (of) sb to do sth“ 某人做某
事……
It is hard for him to make up his mind. 他很难下
2) It is not until + 被强调的部分+ that…
该句型也是强调句型，主要用于强调时间状语， 译成“直到…才…”，可以说是not… until… 的强 调形式。
It was not until she took off her dark glasses that I realized she was a famous film star.
• (4) It takes sb. + 时间段 + to do sth. 某人 做某事花了……时间
• It takes years to master a new language. 要
花多年的时间才能掌握一门新的语言。
【Tip】此句型可以有以下多变种变体：
It took me an hour to write the letter.
定决心。
It was foolish of her to say such a thing. 她说那
样的话，真是太蠢了。 【Tip】介词 of 与 for 的区别是： of 用于指某人的性格、属性、特征等，介词 for表示对象，意为“对……来说”
2) It is V-ed + that
① It is said (reported, learned) + that… It is said that he has come to Beijing.
一、it 作人称代词的用法
• 1. 指事物 • 作为人称代词，it 可以除人以外的一切事
物或动物。如： • I dropped my watch and it broke. 我
把手表掉在地上摔坏了。 • It’s hard work, but I enjoy it. 工作很
辛苦，可是我乐意干。 • “Where is the dog?” “It’s in the
3) It is a pity (a shame) that…
That 后的从句一般用虚拟语气 (should+V原形), should 可以省略. 表示出乎意料，译为 ”竟然“。 没有这种意义时，则不用虚拟语气。 It is a pity that such a thing (should) happen in your class.
三、it用作形式主语
1. 基本用法 • 当不定式、动名词、从句等复杂成分用作句子主
语时，为保持句子平衡，通常把真正的主语放在 句末，而在句首使用形式主语it。如：
• It’s very important to remember this. 记住这
一点很重要。
• It’s hard work climbing mountains. 爬山是费劲
作选择。
(6) it look (seem, appear, happen, occur) that [as if]… 似乎……
• It seemed as though he didn’t recognize me. 他似乎没认出我来。
• It happened that I was out when he called. 他 打电话时我碰巧不在家。
• See to it that you’re not late again. 注意千万
不要再迟到。
• Look to it that this doesn’t happen again. 注意
不要再发生这种事。
• You may rely on it that he’ll come to meet you.
四、it用作形式宾语
1. 基本用法 • 当不定式、动名词、从句等复杂成分用作宾语且
其后跟有宾语补足语时，通常会在宾语补足语前 使用形式宾语，而将真正的宾语移至句末。 • 其基本结构为“动词+it+宾语补足语+不定式(动 名词或从句)”。如：
• I find it difficult to do the job well. 我发现做
• I’d prefer it if I didn’t have to do so much work. 要是我不必做那么多工作，好就太好了。
【说明】能用于此结构的动词不多，常见的有 enjoy, hate, love, like, dislike, appreciate, prefer 等。
(3) 动词 + prep + it + that-从句。如：
=The letter took me an hour (to write). =I took an hour to write the letter.
(5) It is up to sb to do sth. 该由某人做某事 • It’s up to you to to make the choice. 得由你来
temperature
2. 用于某些句型
• It’s time for sth.I该t is 做time某for事bre了akf。ast. • It’s time to do Ist tisht.im该e to做ha某ve 事brea的kfa时st. 候了。 • It’s time for Istbis ttiomedfoor ussthto.h某ave人bre该ak干fast某. 事了。 • It’s (about / high) time + that-从句. 某人该做某事了。
你放心，他会来接你的。
• I can’t answer for it that he will come. 我不能
保证他会来。 【说明】能用于此结构的动词不多，常见的有see
to, look to, insist on, stick to, depend on, answer for 等。
• (4) 动词 + it + 介词短语+ that-从句。如：
• 【说明】在答语中，常用来指本人，如 说 It’s me。
源自文库
• 3. 代替某些代词
• 代词 it 还可用于代替指示代词this, that 以及复合不定代词 something, anything, nothing等。如：
• “What’s this?” “It’s a new machine. ”
bedroom. ” “狗在哪?”“在卧室里”。
• 2. 指人
• it 指人主要用于指不性别不明的婴儿或用 于确认某人的身份。如：
• Is it a boy or a girl? 是男孩还是女孩?
• There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。
soon resign. 据传闻，国防部长不久就要辞职。 【说明】能用于此结构的动词不多，常见的有 have,
take, put, like 等。
• (2) 动词 + it + when (if)-从句。如：
• I dislike it when you whistle. 我不爱听你吹口哨
。
• We really appreciate it when she offered to help. 她来帮忙了，我们十分感激。
好这件事不容易。
• I think it best that you should stay here. 我认
为你最好住这儿。
• We think it no use complaining. 我们认为抱怨
是没有用的。
2. 用作形式宾语的几个特殊结构 (1) 动词+ it + that-从句。如：
(7) If it were not for… / If it hadn’t been for… 若不是因为……
• If it were not for their help, we couldn’t have got over the difficulties. 要不是他们帮助，这 些困难我们不克服不了的。
3. It is about 8:30 now. time
distance
4. It is about 25km from Linquan to Fuyang.
5. It lies in the south of Anhui. place
6. It is 40°C ! You got a high fever!
② It is suggested ( ordered, demanded, insisted, commanded) + that … 从句中的过去分词是表示请求，建议，命令等词 时， that后的从句要用虚拟语气(should + V原 形). Should可以省略。译为“据建议；有命令…”
It is suggested that the meeting (should) be put off.
• I owe it to you that I am still alive. 多亏 有你我才仍然活着。
• I took it for granted that he would help us. 我认为他会帮助我们的。
【说明】能用于此结构的动词不多，常见的 有take it for granted, bring it to sb’s attention, owe it to sb 等。
(从句谓语用过去式，有时也用“should+动词原 形”) • It’s first (seconItdis)thteimfirest t+imtehI’avet-b从een句he.re某. 人第几次干某 事。(从句谓语用现在完成时)
It is two weeks since I saw him
• It’s + 时间段 +It'sstienncyeea.r自s be从for…e I g…rad有uat一ed.段时间了。 • It’s + 时间段It+'s tbeneyfoearres .th过at I多've 长lived的he时re f间or 才… it’s=it was • It‘s + 时间段It w+astthean ty.ea…rs a多go 久whe了n I graduated • It's + 时间段 + when ...是在某个时刻
• I like it that you came. 你来了，我很高兴。 • I take it (that) he will come on time. 我认为他
会准时来的。
• You can put it that it was arranged before. 你
可以说这是以前安排的。
• Rumor has it that the defence minister will
五、用于强调句型中
1) It + be+被强调部分 + that/who (a person) 从句 I met Tom in the park yesterday. 1) It was I who met Tom in the park yesterday. 2) It was Tom who I met in the park yesterday. 3) It was in the park that I met Tom yesterday. 4) It was yesterday that I met Tom in the park.
= Not until she took off her dark classes did I realize she was a famous film star.