［误］ Three days after he died.
［正］ After three days he died.
［正］ Three days later he died.
［析］ after 与 later都可以用来表达一段时间之后，但它们所处的位置不同，after 在时间词前，而later在时间词后。
［误］ She hid herself after the tree.
［正］ She hid herself behind the tree.
［析］ after多用来表达某动作之后，所以有的语法书中称它为动态介词，如：I run after him. After finishing my homework, I went to see a film. 而behind则多用于静态事物之后。
［误］ There is a beautiful bird on the tree.
［正］ There is a beautiful bird in the tree.
［析］ 树上长出的果实，树叶要用on, 而其他外来的人、物体均要用in the tree.
［误］ Shanghai is on the east of China.
［正］ Shanghai is in the east of China.
［析］ 在表达地理位置时有3个介词：in, on, to。 in表示在某范围之内; on表示与某地区接壤；to则表示不相接。如：Japan is to the east of China.
［误］ I arrived at New York on July 2nd.
［正］ I arrived in New York on July 2nd.
［析］ at用来表达较小的地方，而in用来表达较大的地方。at常用于at the school gate, at home, at a bus stop, at the station, at the cinema, at a small village。
［误］ He lived in No. 3 Beijing Road.
［正］ He lived at No. 3 Beijing Road.
［析］ 在门牌号码前要用at, 并要注意它的惯用法：at the end of the street, at the foot of the mountain, at the top of the page。
［误］ There is a colour TV set at the corner of the hall.
［正］ There is a colour TV set in the corner of the hall.
［析］ 在屋内的角落应用in，而墙的外角用at，如：There is a tree at the corner of the street.
［误］ This weekend I'll stay in Uncle Wang's.
［正］ This weekend I'll stay at Uncle Wang's.
［析］ 要注意英文的特殊表达法，如：at a tailor's shop (裁缝店)＝at a tailor's, at the doctor's (去看病) at the bookseller's (在书店) at uncle Wang's (在王叔叔家)
［误］ Do you know there is some good news on today's newspaper?
［正］ Do you know there is some good news in today's newspaper?
［析］ 在报纸上的新闻要用in, 而在具体某一版上，或某一页上则要用on。
［误］ The school will begin on September 1st.
［正］ School will begin on September 1st.
［析］ 这里的school应看作不可数名词泛指学校的课程，即开学之意。要注意，有些活动场所当表达正在从事该种活动时不要加冠词，如：at table (吃饭)， When I came to Tom's home, they were at table. 还有： at desk (学习)，at work (工作) at school (上学)， in hospital (住医院) at church 作礼拜如加上定冠词则另有他意，如：at the school 即在学校工作或办事，in the hospital 即在医院工作或去看望病人。
［误］ In my way to the station, I bought a newspaper to kill time.
［正］ On my way to the station, I bought a newspaper to kill time.
［析］ 译文为：在去车站的路上我买了份报纸，为的是消磨时光"在……的路上"应用on one's way…。而 in the way 有挡道之意，如：Please move the chair it is in the way。
［误］ Look, the door is open, Maybe someone broke into.
［正］ Look, the door is open, Maybe someone broke in.
［正］ Look, the door is open, Maybe someone broke into the office.
［析］ in是表达一个静止状态，在与break连用时其后不加介词宾语，而into则是动态介词，与break连用时要加介词宾语。
［误］ I'll leave Beijing to Shanghai tomorrow.
［正］ I'll leave Beijing for Shanghai.
［正］ I'll leave for Shanghai.
［析］ leave for 是离开某地去某处的固定搭配，不可将for改为别的介词。这样的搭配还有：start for 动身前往某处，set out for， sail for。
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