介词

三. 表示方位的介词 二）over, under, above, below的区别 1. over “在…正上方（垂直）”，也可以指 覆盖，“在…上面”，反义词是under. eg： There is a bridge over the river. 2. under “在…正下方（垂直）” 。 eg：The cat is sleeping under the table. 3. above“在…的下面，低于…”，不一定垂 直，反义词是below。
except, except for
except 同类中“除了。。。之外” except for 非同类中“除了。。。之外” （整体肯定，局部修正） The shop is open everyday except Sunday. He is a handsome guy except for a little fat. Your writing is good except for a few grammar.
七.固定搭配的介词短语 四）动词＋形容词＋介词 be afraid of, be angry with, be able to, be good at, be good for, be proud of, be famous for, be late for, be full of, be filled with, be interested in, be pleased with, be different from, est.
二）after, in 的区别 1. in +一段时间，表示将来的一段时间之后， 用于将来时。 2. After+一段时间 表示过去的一段时间之后， 用于过去时。 如果after 后跟将来的某一个时刻，也可 以用于将来时。 in eg：He will come back_____a week. after a week. He came back ____ after 5 o’clock. He will come back _____
四. 表示方式，方法，手段的介词 3. by 表示“某种交通、通讯、谋生等。” eg：I often go to school by bike. When he was a boy, he can make money by mending computers. in, on 后也可加交通工具，需加修饰词。 eg：I often go to school on the bike. My father always go to work in his car.
四. 表示方式，方法，手段的介词 一）in, with, by的区别 1.in 表示“用…语言，文字，声音，材料， 方法等。” eg：Can I do it in this way? Can you say it in English? 2. with 表示“用某工具，器械，五官等。” eg：We see with eyes. We took many photos with his camera.
across指“从物体的表面横过或越过” eg： walk across the road/bridge... 2. through “从物体的内部或中心穿过” eg：through the window/ forest… 3. past “从物体的旁边路过，经过” 。 eg：he walked past me slowly. across 和 past是介词，加上动词才可以 做谓语。 eg：walk / go across＝cross. go / walk past = pass
二. 表示地点的介词 In, on, at的区别 1. in 表示“在…里面（范围较大）”。 eg： in the universe, in Ronggui, in Shunde, in China, in Asia, in the world, in the sky, in the field 2. at 表示具体的地点，“在某地（范围较小)” at home, at the library, at the bus stop, at the school gate, at th the ground, on the earth
六.其他介词的用法： 4. with 1）. 表示“带有，具有”，表伴随的状态。 eg：China is a country with a long history. The teacher came in the classroom with some books in the hand. 2). 表示“和…在一起。” 如：Would you like to come with us. 5. against 表示“反对，和…比赛，靠着” 如：He is standing against the wall.
三. 表示方位的介词 五）between, among during的区别 1. between 表示“在两者之间。” eg：We have 10 minutes break between classes. 2. among 表示“在三者或以上之间。” eg：Zhangjie is popular among the young. 3. during 表示“在（一段时间）期间。” 很多时候可以跟in互用。 eg：We will go to Shanghai during the winter holiday.
七.固定搭配的介词短语 一）动词＋介词 take about, hear of, think about, wait for, pay for, worry about, listen to, look for, agree with, go through，est.. 二）动词＋副词＋介词 catch up with, do well in, get on with, est. 三）动词＋名词＋介词 take care of, pay attention to, make friends with, est.
eg：The plane is flying above the cloud. Her dress reached below her knee. above, below 还可以指温度“在…以上/以下”
三. 表示方位的介词
三）across, through, past, along, around1.
for 1. for(为了)当介词,表示目的。 He died for his country. 他为国献身。 2. for当介词,表示(供...用的,适合于...的),或 表最终所有权。 There is a desk for the teacher. 在黑板前有一张教师用的桌子。 Here is a letter for you. 有你的一封信。 3. for(向...)当介词,表示目标,去向。 They will leave for Tokyo. 他们要去东京。
4. for(赞成),一般在句中的be后,与 against(反对)意思相反。 I am for the plan. 我同意这项计划。 I am against the plan. 我反对这项计划。 5. for可表示持续的一段时间,一般与完成式 连用。 He has been living here for five years. 他已在这里生活了五年。 6. for(由于),当对等连接词,语气比because 弱。 He was late, for he did not catch the train. 因为没有赶上火车,他迟到了。
一般坐飞机，轮船，小汽车用in，其余用on
五.表示“除…之外”的介词： except, besides的区别
1.except 表示“除…之外（不包括在内）。”
eg：Everyone is here except Tom. （Tom没有来）
2.besides 表示“除…之外，还有…(包括在内)。
eg：I like music, PE besides English. 3. but = except, 但只能用于nothing, nobody, none, all, everybody 等不定代 词后。 eg:There is nobody but Tom in the class.
三. 表示方位的介词 一）In, on, to的区别 1. in 表示“在A在B的范围内（B包括A）”。 eg： Shunde is in the south of China. 2. to 表示"在......面"，即一个地方在另一个 地方的范围之外，互不管辖。尤其当两个 地方相隔较远，且有湖泊、大海等区域相 隔时，通常用 to。 eg：Japan is to the east of China. 3. on 表示A和B有接壤。 eg:Hunan is on the north of Guangdong.
介词
常见的介词有： in, on, at, for, of, by, with, without, up, from, about, around, like, after等. 注意： 一.介词不能单独使用，与名词或代词构成 介词词组，才能在句中充当成分。 二.介词后如果是动词要用V-ing形式。
考点：常见介词的用法及比较
六.其他介词的用法： 1. in ＋颜色, “表示穿…颜色的衣服。” There is a nice girl in blue dress. 2.over 表示“从上面越过。” eg：Can you jump over the stone? 3.like （介词）表示“如同，像…。” eg： I like sports, like running, swimming, playing football and so on. What is your good friend like?
三. 表示方位的介词 四）in front of, at/in the front of的区别 1. in front of 表示“在…前面（在某一范围之 外）。” eg： There is a tree in front of the house. 2. at / in the front of 表示“在…前面，前部（在 某一范围之内）。” eg：The driver sat in the front of the bus.