使用介词应注意的几个问题
1、一“介”之差，意义不同。
英语中有些动词加介词和不加介词意思大不一样，如：shoot sb. 意为“射中或射死某人”；shoot at sb. 意为“瞄准某人射击”。Search sb. “搜身”；arch for sb. “搜寻某人”。
经典长篇小说act/ ~ as 行为/充当；believe/~ in 相信……的话/信任； feel/~ like 感觉/想要； know/~ of/ about 认识/了解； play/~ with 打、弹/玩弄； hear/~ from 听见/清炒虾仁收到……来信； call/~ on 叫/号召、拜访
2. 汉语说法一样，英语介词搭配有别
(如：汉语中“在”字就有多种不同的表达方法。at noon, on Sunday, in the afternoon, under the tree.)
“的”字的不同译法：a friend of mine, a ticket for tonight, the key to the door, the summer in Paris, a war between two countries, a river at the foot of the hill
3. 英语介词有时可表示动词的意义，但决不可将其当作谓语动词用，一定要和动词一起使用。
（at work 在工作，at table 在吃饭，on duty 值班，on show 在展出，on strike 在罢工， on fire 在着火， on sale 在出售，under repair 在修理，under construction 在建设中）
1. He is against the plan. ( against 反对)
2. Mary is in red today. (in 身穿)
3. It’s time for class. (for 上课)
4. We often go to work by bus. (by 乘)
5. He’s helping Granny with her houwork. (with 怀孕可以吃红豆吗做，干)男人腰痛怎么办
始皇帝死而地分4. 动介结构与动副结构后接宾语的位置：
①动介结构V.+ at, for, from, of, into, to, with等所接宾语需放在介词后；
②动副结构V.+ away, back, out, forward, up, down 等）所接宾语若是名词，副词在其前或后均可；若是代词，副词必须放在代词之后。
动介结构：Listen to the radio, plea.
Listen to it. (不能说Listen it to. )
动副结构：Turn on the light.
Turn the light on .
Turn it on . (不能说Turn on it.)
5. 介词在现代英语里，常可省略。具体是：
小松鼠找花生课文①在时间状语前含有：any, this, some, last, next, whole, most, each, half, tomorrow, yesterday 等修饰时
②与时间段连用的介词for在肯定句中。
③下列短语中的介词：be busy(in) doing, spend time(in) doing, have trouble/difficulty(in) doing, prevent/stop sb.(from) doing 在主动语态中。
1. There was a maths test (in) this morning.
2. I’ll ring you up (on) tomorrow afternoon.
3. Wait(for) a minute, plea.
4.The meeting lasted(for) three hours.
分级护理5.They have lived here(for) five years.
6.She spent two hours(in) watching TV.
7.Can you stop him(from) troubling me?
6. 介词出现在句尾时不要漏掉。尽管少数介词有时可省，但多数短语不可随意漏掉，尤其不定式作定语，若这个不定式是不及物动词，其后应有适当的介词。还有在定语从句及被动语态中，句尾的介词常易漏掉。
1. This baby should be taken gook care of.
2.There is on place for people to walk on.
3.I’m looking for a chair to sit on.
4.The room is big enough for us to live in.
5.I don’t know the man she talked to just now.
被动的英文6.The pen(which) he wroth with is expensive.
