1. at误］it will really do you no harm quite.［正］it will really do you no harm at all.
［析］at all和quite的汉语意思均为“全然”、“确定的”，但at all适用于否定句，例如：--i'msorry. i'm late.
--no trouble atall.又如：idon't think it is rightat all.
而quite则适用于肯定句，例如：he is quite a good teacher.
误］the children play football for lunch.［正］the children play football at lunch.［析］英语中的atlunch为“在吃午饭时”。
这种惯用法还有atwork（在工作），attable（在吃饭），atdesk（在学习）。而forlunch则是为午饭而准备的食物，又如：wehadsomemilk for breakfast.
误］there is a post office in the corner of the street.［正］there is a post office at the corner of the street.
析］at the corner是指墙外面的角，而in the corner是指建筑物内部的角落。例如：there isa computer in the corner oftheroom.
thereis a streetlamp at thecornerof the street.
at, in, on
在表示时间时用来表示具体钟点用at，如：he will be back at six.表示一天的上、下午时要用in，如：
iusuallygetupatsixinthemorning.但要注意的是：inthemorning和in the afternoon这两个词组中如果加入了任何修饰词，其介词要换为on，如：
on thecold morning, on the hot afternoon.又如：see you on monday morning.
如讲到具体的某一天，要用on,如：on sunday,如：i usually want to visit my mother on sundays.
在谈到周、月、季、年时要用in，如：all the children will be happy in easter 但要注意在泛指圣诞节、复活节、感恩节时都用at,如：whereareyou going at easter.
2. back
误］i'm sorry. i h**e to back home.［正］i'm sorry.
i h**e to go back home.［正］i'm sorry. i h**e to go home.
［析］back用作“回到（某处）”之意，不是动词。3. be
误］where do you from?［正］where are you from?［析］“你从何处来”应为where are you from?
或where do you come from?但要注意这两句话均是问对方从哪个国家来的。要是口语中问“你是从什么地方来？
”应讲wheredidyou
come from?回答用i came from the library.
4. beat
误］we h**e won your class.［正］we h**e beaten your class.［正］we h**e won the game.
析］win是胜过之意，它是及物动词，但其后的宾语只能接比赛、战争、奖品、奖金的名称，如：whichteamwonthefootballmatch?而beat指打败对手、敌人如：
mybrotherbeat me at poker.（要注意的是，beat的过去式与原形相同，而过去分词为beaten）。
误］the ball beat me badly.［正］the ball hit me badly.
误］he used to hit the little boy black and blue.［正］he used to beat the little boy black and blue.［析］beat指打击多次，而hit则为击中对方的一次性打击。
5. beautiful
误］he is a beautiful boy.［正］he is a handsome boy.
析］我们可以讲she is a beautiful girl. this is a beautiful park.但要讲男人的“英俊”时要用handsome.
6. because
误］the reason why i was late is because i was ill.［正］the reason why i was late is that i was ill.［误］because it was sunday, so the park was crowded.
［正］because it was sunday the park was crowded.［析］这种错误是因为中文的习惯与英语的表述法不同，中文常讲我来晚了的原因是因为我病了，而英文中的第二个因为要用that代替。又因中文常讲因为所以，而英文中用了因为就不能再用所以了，同样用了“所以”也就不要再用“因为”一词。
例如：becausewestudyhard,wepassedtheexameasily.或者：
westudyhardsowepassedtheexameasily.
because, because of
because后要接从句，例如：welike physics because we can learn a lot of new ideas.而becauseof后要接名词作介词宾语，如：
heisnotatschoolbecauseoftheillness.
7. before
误］we h**e two hours to kill before we will go home.［正］we h**e two hours to kill before we go home.
析］kill time意为“消磨时光”。
英语状语从句中要用一般现在时表示将来的动作。如：if it rains we willnotgoto thepark.
误］i did this work two days before.［正］i did this work two days ago.
析］用ago组成的时间状语其主句中的谓语动词要用过去时，而before引起的时间状语其主句中的谓语动词多用完成时，如：i has done this work a few days before.
before, long, long before
beforelong是“不久”之意，例如：ishallgotoamericabeforelong.而longbefore则是“很久很久”之意，如：
we knew this teacher long before we saw him.（我们在看到这位老师之前很久就知道他了。）
8. begin
误］the meeting will begin from monday.［正］the meeting will begin on monday.［误］the film has begun for ten minutes.
［正］the film has been on for ten minutes.
析］begin是瞬间动词，所以它的完成时态不能接表示一段时间的状语，如：thefilmhasbegun.这句话是对的，即“电影已经开始”。
但要讲已经开始10分钟了则要用hasbeenon即“上演了10分钟”。
begin, start
begin与start两词后面加不定式或动名词都可以，且意思并无区别，但在表达习惯时接动名词的用法较多，如：how old were you when you first started learning english?但这两个词的进行时态中则多用不定式，如：
i was beginning to get hungry.但如果句子的主语是物而不是人，则多用不定式，如： we got to school.
当动词是表达某种心理状态时，要用不定式，如：the studentbegan to understand his mistakes.
误］they study hard in the class from the beginning to the end.［正］they study hard in the class from beginning to end.
析］from beginning to end是习惯用法，即自始至终，不要加冠词，但如单独使用则要加冠词，例如：at the beginning, the teacher g**e us an exam.
9. behind
误］he missed the class because he was behind the time.［正］he missed the class because he was behind time.［析］behindtime一短语意为“晚了”，而behindthetimes意为“落后于时代”。
behind是介词同时又是副词，如comeoutfrombehindthedoor（介词）.he'salongwaybehind（副词）. he fell behind with his classmates（副词）.
10. below
误］what's that below the chair.［正］what's that under the chair.［析］under意为“正下方”，而below意为“比低”，或指“在下游”。
如：thereisafall below the river.（河的下游有一个瀑布。
）其反义词为over，如：there is a bigplane flying over the city.但在“下面的例子”一表达语中则要用the examplebelow,而不要用under.
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