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中学生英语学习常见错误一览表3 C 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.? | 
