新概念一 31课 相关知识点链接
一般现在时:
一般现在时表示,包括现在在内的一段时间内经常发生的动作或存在的状态。 例:He walks to school every day. be动词的一般现在时
★肯定式:主语+am/is/are+表语.
★否定式:主语+am/is/are+not+表语. be ★一般疑问式:Am/Is/Are+主语+表语?
★简略答语 ●肯定回答:Yes,主语+am/is/are.
●否定回答:No,主语+am not/isn't/aren't. 例:肯定句: . 他是医生。
否定句: . 疑问句: . 肯定回答: . 否定回答: .
现在进行时:表示正在发生的动作或事情。
结构:一、主语+be+动词-ing(现在分词)形式+其他。
注:在现在进行时中be动词和动词-ing 缺一不可。 例: .我在唱歌。 .他们在跳舞。 二、一般疑问句把be动词提到句首。
肯定回答:Yes, 主语+be.
否定回答:No, 主语+be + not. 例:I am singing.
疑→ 肯→ 否→ 例:They are dancing.
疑→ 肯→ 否: 注意:疑问句I→ am→ 三、否定句:在be动词后加not
例: I am singing. →否 They are dancing. →否 四、对现在进行时的陈述句提问
They are dancing.→ They are dancing.→ 动词的现在分词
动词的现在分词是在原型动词词尾加-ing构成及构成方法如下 规则 举例 在一般情况下词尾加ing work → ,help → 重读闭音节, ,双写辅音字母加 -ing plan → , stop → 不发音的e结尾,去掉e+ ing like → , live → 以e结尾ie→y+ ing die → 标志:now现在 look看 listen听 Please be quiet请安静
一.写出下列动词的ing形式 1 run<跑> → 7 cut<切 割> → 2 smile<微笑> → 8 put<放 放置> → 3 play<玩> → 9 rain<下雨> → 4 write<写> → 10 lie<说谎> → 5 take<拿走> → 11 die<死> → 6 ride<骑> → 12 stand<站> → 二.单项选择
( )1. The dog is across the grass. A. run B. running c. to run D. runs ( )2. The boy is across the river.
A. swim B. swims C. swimming D. swam ( )3.-What are your brothers doing now? -My brothers in the garden.
A. play B. is play c. is playing D. are playing
( )4. Mr. Smith and his wife are the boats on the river: A. looking at B. look at C. look D. looking ( )5.What the children ? -They are sleeping.
A. are; doing B. is; doing C. do; do D. are; do 三.用所给动词的正确形式填空
1. The boys are (swim)in the river.
2. The children are (run)out of the school. 3. The girls are (put)on their coats. 4. The teacher is (read)her books. 5. She is (type)some letters.
6. Sally is (come)out of the shop. 7. The sun is (shine).
8. They are (look)at the photos. 9. The cats are (climb)the tree. 10. Emma is (cook)a meal.
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