dinner
［误］ When did you have the supper?
［正］ When did you have supper?
［析］ 英语中一日三餐前无冠词，例如：
［误］ I had a lunch at 12 o'clock.
［正］ I had lunch at 12 o'clock.
［析］ 在某些特定场合，如指某次宴会，则要加冠词，如：The dinner was given in honour of the guest.
dress
［误］ My father bought a new dress for himself yesterday.
［正］ My father bought a new suit for himself yesterday.
［析］ 一般来讲男套装用suit，女服则用dress；作男服的服装店是tailor shop (tailor's), 而做女装的服装店是dressmaker's.
［误］ The mother dressed the clothes on her child.
［正］ The mother dressed her child.
［析］ dress作及物动词当"穿衣服"讲时，其后不能接衣服而只能接人，如：The boy is still too young to dress himself. 但作为一种穿着打扮的状态时，则多用其过去分词作形容词，如：He is not dressed in his new suit.或She is dressed in red. 词组dress up是过节日时应服装整齐，如：They dressed up for the holiday.
dress have on put on wear
要区别这几个动词需分清是表示动作的动词还是表示状态的动词。表示状态的动词是have on和wear，如：He has on a white coat. He was wearing heavy shoes. 而put on则表示穿衣的动作，如：Put on your coat,it is cold outside.而dress即可以作状态又可以作动作，作动作讲时其后面接人而不能接衣服，作穿着状态时则多用dressed的形式。如：I saw a lady dressed in red. I saw a girl dressing herself.
drop
［误］ The students fell their voice.
［正］ The students dropped their voice.
［析］ drop与fall都可以表示"落下、掉下"之意，有时可以互换，如：The dictionary fell (dropped) from the table. 但drop还可以作及物动词，而fall一般只能作不及物动词。
［误］ I shall drop in you.
［正］ I shall drop in on you.
［析］ drop in是随便拜访某人，而其后要接人时应加介词on再加人称。
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