it作为代词,可以代指什么
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推荐于2017-09-14 · 知道合伙人教育行家
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it的用法
用作人称代词:
1、指代事物:
— What’s this?
— It’s a cat.
2、指代人:常用于不知对方性别时,比如:询问敲门人或打电话时询问对方是
谁,或者用来指代婴儿。
(1)—Who’s it?
—It’s Sam.
(2)—Who’s the baby in the picture?
—It’s my younger brother.
二、用作非人称代词:指代天气、时间、季节或距离等,此时的it无意义。
(1)It’s two o’clock now.
(2)It’s very cold in spring in the northern China.
(3)It’s about 100 kilometers from our town to the big city.
三、用作替代词:it可作形式主语、形式宾语,可代替不定式、动名词或从句。
(1)It is not known where she has gone.
(2)It’s bad for your eyes reading in bed.
(3)It is clever of him to work out the math problem.
四、用于强调句,构成“It+be +被强调部分that…”结构。
如:It’s in the small shop that I bought the important book.
五、在初中英语教材中,出现了许多由it引导的固定句式,现归纳如下:
(一)It's time for sb. to do sth. / It's time for sth.意为"是(某人)该干……的时间了"、"
到……的时候了"。
例如: 1. It's time for supper /to have supper.该吃晚饭了。
2. It's time for me to study.我该学习了。
(二)It takes (sb.) some time to do sth.意为"(某人)花……时间做某事"。
例如:
1. It takes twenty minutes to go to school by bike.
骑自行车上学要花二十分钟的时间。
2. It took me a week to finish reading the book.
我花了一周时间读完这本书。
(三)It is one's turn to do sth.意为"轮到某人做某事了"。
例如:It's your turn to be on duty tomorrow. 明天轮到你值日了。
(四)It is / has been +时间段+since +一般过去时,意为"自从……以来已过
了……(时间)。"
例如:1. It is / has been four days since I caught a cold. 我感冒已四天了。
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2. It is / has been two weeks since we met last. 自从我们上次见面以来已过了两周。
(五)It seems /seemed +that从句,意为"看起来好像……"。
例如:It seemed that our team was going to win. 我们队看起来好像要赢了。
(六)It's+表语+to do sth.。
例如:It's a good idea to go out for a walk. 出去散步是个好主意。
(七)It's +adj.+that从句。
例如:It's true that I may fall behind the other students.我真可能落在别的学生后面。
(八)It's+adj.+of(for)sb.+to do sth.。
对于这个句型究竟用of还是用for,主要取决于前面的形容词。
如果形容词是描述不定式行为者的性格、品质等的,如 kind,good,nice,clever等用of;
如果形容词仅仅是描述行为的则用for,这类形容词常见的有difficult,easy,hard, important,dangerous等。
例如:1. It is nice of you to come to see me.你能来看我真好。
用作人称代词:
1、指代事物:
— What’s this?
— It’s a cat.
2、指代人:常用于不知对方性别时,比如:询问敲门人或打电话时询问对方是
谁,或者用来指代婴儿。
(1)—Who’s it?
—It’s Sam.
(2)—Who’s the baby in the picture?
—It’s my younger brother.
二、用作非人称代词:指代天气、时间、季节或距离等,此时的it无意义。
(1)It’s two o’clock now.
(2)It’s very cold in spring in the northern China.
(3)It’s about 100 kilometers from our town to the big city.
三、用作替代词:it可作形式主语、形式宾语,可代替不定式、动名词或从句。
(1)It is not known where she has gone.
(2)It’s bad for your eyes reading in bed.
(3)It is clever of him to work out the math problem.
四、用于强调句,构成“It+be +被强调部分that…”结构。
如:It’s in the small shop that I bought the important book.
五、在初中英语教材中,出现了许多由it引导的固定句式,现归纳如下:
(一)It's time for sb. to do sth. / It's time for sth.意为"是(某人)该干……的时间了"、"
到……的时候了"。
例如: 1. It's time for supper /to have supper.该吃晚饭了。
2. It's time for me to study.我该学习了。
(二)It takes (sb.) some time to do sth.意为"(某人)花……时间做某事"。
例如:
1. It takes twenty minutes to go to school by bike.
骑自行车上学要花二十分钟的时间。
2. It took me a week to finish reading the book.
我花了一周时间读完这本书。
(三)It is one's turn to do sth.意为"轮到某人做某事了"。
例如:It's your turn to be on duty tomorrow. 明天轮到你值日了。
(四)It is / has been +时间段+since +一般过去时,意为"自从……以来已过
了……(时间)。"
例如:1. It is / has been four days since I caught a cold. 我感冒已四天了。
1/3页
2. It is / has been two weeks since we met last. 自从我们上次见面以来已过了两周。
(五)It seems /seemed +that从句,意为"看起来好像……"。
例如:It seemed that our team was going to win. 我们队看起来好像要赢了。
(六)It's+表语+to do sth.。
例如:It's a good idea to go out for a walk. 出去散步是个好主意。
(七)It's +adj.+that从句。
例如:It's true that I may fall behind the other students.我真可能落在别的学生后面。
(八)It's+adj.+of(for)sb.+to do sth.。
对于这个句型究竟用of还是用for,主要取决于前面的形容词。
如果形容词是描述不定式行为者的性格、品质等的,如 kind,good,nice,clever等用of;
如果形容词仅仅是描述行为的则用for,这类形容词常见的有difficult,easy,hard, important,dangerous等。
例如:1. It is nice of you to come to see me.你能来看我真好。
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