语法之祈使句和there be 句型和练习（讲义）-2023-2024学年人教PEP版英语六年级下册

祈使句：用于表达命令、请求、劝告、警告、禁止等的句子。 （注：1.祈使句主语you常省去；2.朗读应用感叹调，句末常标感叹号; 3.用客气的语气表示祈使句时，可在句首或句尾加上please，但如果在句尾加please，那在please之前一定要加一个逗号。） 肯定祈使句 否定祈使句 1. Be + 形容词/名词 Eg:Be quiet, please. 1. Don't+动词原形 Eg:Don’t play on the street. 2. Let+宾语+动词原形+其他成分 Eg:Let me show you way. 2.Let+宾语+ not+动词原形 =Don’t let +宾语+ 动词原形 Eg:Let’s not talk about this news. Eg:Don’t let me cry. 3. 实意动词原形+其他成分 Eg: Open the door. 4.do+动词原形+其他(为了加强语气) Eg: Do sit down.务必请坐。 Eg: Do study hard.一定要努力学习。 3.No+名词/v-ing Eg:No smoking. 4. 用否定副词never构成，以加强否定含义 Eg: Never give up. 小学英语语法之祈使句和There be句型 祈使句 Exercise 1． 根据所给词的适当形式填空。 1. (not water) the flowers in the evening. 2. (not be) careless. 3. Children, no (eat) or (drink) in the classroom. 4. Be (care)! 5. Let’s (clean) the room together! 2． 按要求改写句子。 1.不要坐在桌子上。（翻译成英文） 2.You shouldn’t run on the subway.（改为祈使句） 3.Sing and dance with music.（改为否定句） 4.黄灯时停下并等待。（翻译成英文） 5.You should sweep the floor.（改为祈使句） There be句型 There be +名词+地点（时间）状语：表示某地有某物或某人（be" 的形式应根据离其最近的名词而定，也就是“就近原则”。） 肯定句 否定句 一般疑问句 There is/are/was/were... There isn’t/aren’t/wasn’t/weren’t... Is/Are/Was/Were there... There is/are/was/were... Eg:There is a river in the park.就近原则 There is a river and two bridges in the park. Eg:There are some trees in the park. Eg:There was a river in the park two years ago. Eg:There were some trees in the park two years ago. There isn’t/aren’t/wasn’t/weren’t... Eg:There isn't a river in the park. There isn’t a river and two bridges in the park. Eg:There aren’t any trees in the park. Eg:There wasn’t a river in the park two years ago. Eg:There weren’t any trees in the park two years ago. Is/Are/Was/Were there... Eg:Is there a river in the park? Is there a river a