助动词( do, does, did )do, does用于一般现在时,其过去式did用于一般过去时。它们通常用在疑问句和否定句中。它们的否定形式:do not = don’t, does not = doesn’t, did not = didn’t注意:在一般现在时中,does用于第三人称单数,其余一律用助动词do;助动词do, does, did后面一定要用动词原形。
1、用适当的助动词填空。
1) ______you like this magazine?
2) The girl______like bread for breakfast
情态动词情态动词也是一类特殊的动词,平时我们不把它说成是动词。情态动词可以和行为动词同时出现在同一个句子中。我们现在学过的情态动词有:can、could、shall、should、will、would、may、might 、must。注意:情态动词后动词总是用原形。(不受其他任何条件影响)其否定形式:can not = can’t, must not = mustn’t, … 注意:may not和shall not(无缩写形式)练一练:选择填空。
( ) 1) The sign on the wall means you ______stay away from the building.
A. must B. can’t C. shouldn't
( ) 2) How many books ______ you see on the desk? A. may B. can C. should
( ) 3) It means you ______ make noise in the library. A. should B.. shouldn't C. can
( ) 4) --- ______you like a glass of milk? --- Yes, please. A. May B. Could C. Would
( ) 5) --- ______you see the sign over there? --- Sorry, I can’t. A. Can B. Can’t C. Should
( ) 6) ______ we go to the park by bus? A. May B. Must C. Shall
温馨提示:答案为网友推荐,仅供参考