call
[误] I'll call at Mr Brown.
[正] I'll call on Mr Brown.
[误] I'll call on Mr Brown's home.
[正] I'll call at Mr Brown's home.
[析]作"拜访"讲时, at后面接访问地点,而 on后面接访问的人。
call on drop in visit
call on比较正式的为公务的访问,如: We were called on by the old students. 而 drop in则是比较随便的走走,顺便拜访,如: If you're free, drop in. 而 visit则是更正式的外交访问或友好往来,如: My school's headmaster will visit America next week.?
can
[误] A blind man can not judge colours.
[正] A blind man cannot judge colours.
[误] I cann't call for you at ten.
[正] I can't call for you at ten.
[析] can的否定形式应为 cannot或 can't.
[误] It's only six o'clock. That mustn't be the postman.
[正] It's only six o'clock. That can't be the postman.
[析] must用来表示一种肯定的推断,如: She must have some problems. She keeps crying. 但在否定句中则要用 can't,要表示对过去的推测则要用" must+ have+过去分词"的表达法,如: The lights have gone out.A fuse must have blown.而对过去的否定推测则多用" can't?+ have+过去分词",如: I don't think he can have heard you. Call again.
[误] 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]" couldn't help+动名词"表示禁不住做了某事。但 could not help but与 could not but后面要加不带 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与 be able to都可以用来表示能力,但 can只有现在时与过去时, be able to则可用任何时态,如: He will be able to teach the child. 但要表示经过努力而达到的一次性动作则只能用 be able to,如: He finally was able to jump over 2? 10 meters. 或: The plane was able to fly over the mountain. 但要注意的是这两个词都没有进行时态,而 be able to后面不接不定式的被动态。
can could
can与 could都可以用在现在时的口语中,只是用 could更为礼貌,语气更委婉。如: Could you tell us a story
care
[误] I don't care coffee.
[正] I don't care for coffee.
[误] Take care for your steps.
[正] Take care of your steps.
[析] care for是"对某物感兴趣",而 care of是"关心,要当心某事",如: She didn't care for him. Take care of what you are doing.
[误] I don't care where we will go if it doesn't rain.
[正] I don't care where we go if it doesn't rain.
[析]在 it doesn't matter, I don't care, I don't mind,及 in case引出的状语从句后面要用现在时表示将来。如: I've got a football in case we have time for a game.
change
[误] I want to change my camera with that one.
[正] I want to change my camera for that one.
[析] change for为"以某物为交换物"。而 change with则是"随……而变",如: The wood's colour changed with the season.
cheap
[误] A teacher's salary is generally very cheap.
[正] A teacher's salary is generally very low.
[析]工资的高低要用 low, cheap是指价格便宜,如果要讲物美价廉则要用 not expensive,如: This car is not expensive.
choose
[误] 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是名词,而 choose是动词。
class
[误] The class is watching TV.
[正] The class are watching TV.
[析] class作主语时,如果作为整体讲则应用单数形式的谓语动词,如: The class was more than forty in number. 如考虑到具体的每个成员时则应用复数形式的谓语动词,如: The class are, in general, very bright.
clean
[误] Sorry, I didn't bought it here. I cleanly forgot.
[正] Sorry, I didn't bought it here. I clean forgot.
[析] clean可以作为副词讲,其意为"完全",而 cleanly则意为"正确地"、"干净利落地",如: The knife doesn't cut cleanly. 而 clean作为形容词讲时意为"清洁的"、"干净的",如: Her face is not clean now.