一般过去时的用法与结构.doc

一般现在时的用法与结构1、一般现在时的定义及构成 一般现在时表示现在经常反复发生的动作、存在的状态或习惯性的动作。(1) be(am,is,are)动词：(作谓语动词时)肯定句:主语+be动词(am,is,are)+其它。如：I am a student.(主语+be动词+名词) They are hungry.（主语+be动词+形容词） He is out.(主语+be动词+副词) That pen is mine.(主语+be动词+代词) I am fifteen.(主语+be动词+数词) The bike is under the tree.(主语+be动词+介词短语)运用am,is,are写三个句子否定句：主语+ be(am,is,are) + not +其它。如：He is not a worker.他不是工人。运用am,is,are写三个句子一般疑问句：Be(am,is,are) +主语+其它。如：-Are you a student?-Yes. I am. / No, Im not.运用am,is,are写三个句子特殊疑问句：疑问词+一般疑问句。如：Where is my bike? 运用am,is,are写三个句子特殊疑问句：疑问词（what, where, who, when, which, whose, how, how many, how much, what shape, what colour,）,找句子中有没有be动词（is, am或者are）或情态动词或者助动词（特殊疑问句:疑问词+be动词（is, am或者are）或情态动词或者助动词+其他?）(2)行为动词：主语+行为动词+（其它）。（作谓语动词时)1)主语不是第三人称单数时， 肯定句为：主语+动词原形+其它 否定式为：主语+dont+动词原形+其它 疑问句为：Do+主语+动词原形+其它？ e.g. We speak Chinese. Do you speak Chinese? -Yes, I do. / No, I dont.They dont speak Chinese. 写三个句子2)当主语是第三人称单数时： (he,she,it,A/An,单独的人或事物:Lily/book)肯定句为:主语+动词（词尾加s或es）+其它。 否定式为：主语+doesnt+动词原形+其它. 疑问句式：Does+主语+动词原形+其它？ He speaks English.He doesnt speaks English.- Does she go to work by bike?Yes, she does. / No, she doesnt.写三个句子特殊疑问句：疑问词+一般疑问句。如：How does your father go to work?3)动词+s的变化规则(1)一般情况下，直接加-s，如：cook-cooks, milk-milks(2)以s. x. sh. ch. o结尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes(3)以辅音字母+y结尾，变y为i, 再加-es，如：study-studies(3)情态动词（作谓语动词时)(can,could,be able to,may,might,must,have to,need,shall,should,will,would)时，句子结构为：肯定句：主语+情态动词+动词原形。 否定句：主语+情态动词+not+动词原形一般疑问句;情态动词+主语+动词原形+其他？特殊疑问句：疑问词+情态动词+主语+动词原形+其他？Eg: He can speak English. Can I help you? What can I do for you?在实际应用中，一般现在时常与以下时间状语联用：always, usually, often, sometimes, every week (day, year, month),once a week, on Sundays 例句：He usually plays football on Sundays.一、 写出下列动词的第三人称单数talk_forget_hope_stop_perform_play_saybuy_worry_fly_study_like_make_take_love_recite_become_come_drive_二、句型转换1. The children have a good time in the park.否定句：_一般疑问句：_对划线部分提问：_2. There is about nine hundred people at the concert.否定句：_一般疑问句：_对划线部分提问：_3. Ann does her homework yesterday evening.否定句：_一般疑问句：_对划线部分提问：_4. I read an English book.否定句：_一般疑问句：_肯定/否定回答：_对划线部分提问：_5. My brother is in the park just now.否定句：_一般疑问句：_对划线部分提问：_一般现在时第三人称单数句型转换练习1. I go to school before 7:00 in the morning. ( he )_2. I always go shopping with my mum on Sunday. ( she )_3. I s