call

　　[誤] Ill call at Mr Brown.

　　[正] Ill call on Mr Brown.

　　[誤] Ill call on Mr Browns home.

　　[正] Ill call at Mr Browns home.

　　[析] 作拜訪講時(shí)，at后面接訪問地點(diǎn)，而on后面接訪問的人。

　　 call on drop in visit

　　call on比較正式的為公務(wù)的訪問，如：We were called on by the old students. 而drop in則是比較隨便的走走，順便拜訪，如：If youre free, drop in. 而visit則是更正式的外交訪問或友好往來，如：My schools headmaster will visit America next week.?

　　can

　　[誤] A blind man can not judge colours.

　　[正] A blind man cannot judge colours.

　　[誤] I cannt call for you at ten.

　　[正] I cant call for you at ten.

　　[析] can的否定形式應(yīng)為cannot或cant.

　　[誤] Its only six oclock. That mustnt be the postman.

　　[正] Its only six oclock. That cant be the postman.

　　[析] must用來表示一種肯定的推斷，如：She must have some problems. She keeps crying. 但在否定句中則要用cant， 要表示對過去的推測則要用must+have+過去分詞的表達(dá)法，如：The lights have gone out.A fuse must have blown.而對過去的否定推測則多用?cant?+have+過去分詞，如：I dont think he can have heard you. Call again.

　　[誤] We could not help to laugh at once.

　　[正] We could not help laughing at once.

　　[正] We could not help but laugh at once.

　　[析] couldnt help+動名詞表示禁不住做了某事。但could not help but與could not but后面要加不帶to的不定式，意思都是不得不去做某事.如：You could not (help) but respect him.

　　can be able to

　　can與be able to都可以用來表示能力，但can只有現(xiàn)在時(shí)與過去時(shí)，be able to則可用任何時(shí)態(tài)，如：He will be able to teach the child. 但要表示經(jīng)過努力而達(dá)到的一次性動作則只能用be able to，如：He finally was able to jump over 2?10 meters. 或：The plane was able to fly over the mountain. 但要注意的是這兩個詞都沒有進(jìn)行時(shí)態(tài)，而be able to后面不接不定式的被動態(tài)。

　　can could

　　can與could都可以用在現(xiàn)在時(shí)的口語中，只是用could更為禮貌，語氣更委婉。如：Could you tell us a story

　　care

　　[誤] I dont care coffee.

　　[正] I dont care for coffee.

　　[誤] Take care for your steps.

　　[正] Take care of your steps.

　　[析] care for是對某物感興趣，而care of是關(guān)心，要當(dāng)心某事，如：She didnt care for him. Take care of what you are doing.

　　[誤] I dont care where we will go if it doesnt rain.

　　[正] I dont care where we go if it doesnt rain.

　　[析] 在it doesnt matter, I dont care, I dont mind, 及in case引出的狀語從句后面要用現(xiàn)在時(shí)表示將來。如：Ive got a football in case we have time for a game.

　　change

　　[誤] I want to change my camera with that one.

　　[正] I want to change my camera for that one.

　　[析] change for為以某物為交換物。而change with則是隨而變，如：The woods colour changed with the season.

　　cheap

　　[誤] A teachers salary is generally very cheap.

　　[正] A teachers salary is generally very low.

　　[析] 工資的高低要用low，cheap是指價(jià)格便宜，如果要講物美價(jià)廉則要用not expensive, 如：This car is not expensive.

　　choose

　　[誤] We each had to have a choose of A or B.

　　[正] We each had to have a choice of A or B.

　　[析] choice是名詞，而choose是動詞。

　　class

　　[誤] The class is watching TV.

　　[正] The class are watching TV.

　　[析] class作主語時(shí)，如果作為整體講則應(yīng)用單數(shù)形式的謂語動詞，如：The class was more than forty in number. 如考慮到具體的每個成員時(shí)則應(yīng)用復(fù)數(shù)形式的謂語動詞，如：The class are, in general, very bright.

　　clean

　　[誤] Sorry, I didnt bought it here. I cleanly forgot.

　　[正] Sorry, I didnt bought it here. I clean forgot.

　　[析] clean可以作為副詞講，其意為完全，而cleanly則意為正確地、干凈利落地，如：The knife doesnt cut cleanly. 而clean作為形容詞講時(shí)意為清潔的、干凈的，如：Her face is not clean now.

　　call

　　[誤] Ill call at Mr Brown.

　　[正] Ill call on Mr Brown.

　　[誤] Ill call on Mr Browns home.

　　[正] Ill call at Mr Browns home.

　　[析] 作拜訪講時(shí)，at后面接訪問地點(diǎn)，而on后面接訪問的人。

　　 call on drop in visit

　　call on比較正式的為公務(wù)的訪問，如：We were called on by the old students. 而drop in則是比較隨便的走走，順便拜訪，如：If youre free, drop in. 而visit則是更正式的外交訪問或友好往來，如：My schools headmaster will visit America next week.?

　　can

　　[誤] A blind man can not judge colours.

　　[正] A blind man cannot judge colours.

　　[誤] I cannt call for you at ten.

　　[正] I cant call for you at ten.

　　[析] can的否定形式應(yīng)為cannot或cant.

　　[誤] Its only six oclock. That mustnt be the postman.

　　[正] Its only six oclock. That cant be the postman.

　　[析] must用來表示一種肯定的推斷，如：She must have some problems. She keeps crying. 但在否定句中則要用cant， 要表示對過去的推測則要用must+have+過去分詞的表達(dá)法，如：The lights have gone out.A fuse must have blown.而對過去的否定推測則多用?cant?+have+過去分詞，如：I dont think he can have heard you. Call again.

　　[誤] We could not help to laugh at once.

　　[正] We could not help laughing at once.

　　[正] We could not help but laugh at once.

　　[析] couldnt help+動名詞表示禁不住做了某事。但could not help but與could not but后面要加不帶to的不定式，意思都是不得不去做某事.如：You could not (help) but respect him.

　　can be able to

　　can與be able to都可以用來表示能力，但can只有現(xiàn)在時(shí)與過去時(shí)，be able to則可用任何時(shí)態(tài)，如：He will be able to teach the child. 但要表示經(jīng)過努力而達(dá)到的一次性動作則只能用be able to，如：He finally was able to jump over 2?10 meters. 或：The plane was able to fly over the mountain. 但要注意的是這兩個詞都沒有進(jìn)行時(shí)態(tài)，而be able to后面不接不定式的被動態(tài)。

　　can could

　　can與could都可以用在現(xiàn)在時(shí)的口語中，只是用could更為禮貌，語氣更委婉。如：Could you tell us a story

　　care

　　[誤] I dont care coffee.

　　[正] I dont care for coffee.

　　[誤] Take care for your steps.

　　[正] Take care of your steps.

　　[析] care for是對某物感興趣，而care of是關(guān)心，要當(dāng)心某事，如：She didnt care for him. Take care of what you are doing.

　　[誤] I dont care where we will go if it doesnt rain.

　　[正] I dont care where we go if it doesnt rain.

　　[析] 在it doesnt matter, I dont care, I dont mind, 及in case引出的狀語從句后面要用現(xiàn)在時(shí)表示將來。如：Ive got a football in case we have time for a game.

　　change

　　[誤] I want to change my camera with that one.

　　[正] I want to change my camera for that one.

　　[析] change for為以某物為交換物。而change with則是隨而變，如：The woods colour changed with the season.

　　cheap

　　[誤] A teachers salary is generally very cheap.

　　[正] A teachers salary is generally very low.

　　[析] 工資的高低要用low，cheap是指價(jià)格便宜，如果要講物美價(jià)廉則要用not expensive, 如：This car is not expensive.

　　choose

　　[誤] We each had to have a choose of A or B.

　　[正] We each had to have a choice of A or B.

　　[析] choice是名詞，而choose是動詞。

　　class

　　[誤] The class is watching TV.

　　[正] The class are watching TV.

　　[析] class作主語時(shí)，如果作為整體講則應(yīng)用單數(shù)形式的謂語動詞，如：The class was more than forty in number. 如考慮到具體的每個成員時(shí)則應(yīng)用復(fù)數(shù)形式的謂語動詞，如：The class are, in general, very bright.

　　clean

　　[誤] Sorry, I didnt bought it here. I cleanly forgot.

　　[正] Sorry, I didnt bought it here. I clean forgot.

　　[析] clean可以作為副詞講，其意為完全，而cleanly則意為正確地、干凈利落地，如：The knife doesnt cut cleanly. 而clean作為形容詞講時(shí)意為清潔的、干凈的，如：Her face is not clean now.