现在进行时(修改).doc

时态专项现在进行时一 构成: 主语+be+现在分词 (动词ing)形式 第一人称 + am + doing I am singing an English song.第二人称 + are + doing They are watching TV .第三人称 + is +doing He is doing his homework. 注意：be应为助动词，初学者最容易漏掉。二形式。肯定句否定句疑问句 简要回答I am studying.I am not studying.Am I studying? Yes，I am/ No，I am not.注意：I am studying 可以缩写为 Im studying， 但是Yes， I am一般不缩写为Yes， Im. 因为Im后面一般都要接表语，而不能为空。三. 现在分词的构成: 一般情况下，直接加 ing。 work - working sleep - sleeping study - studying 以不发音的e结尾的动词，去掉 e加 ing。 take - taking make - making dance - dancing 重读闭音节的动词，要双写词尾字母，再加 ing。 cut - cutting stop - stopping begin - beginning 以ie结尾的动词，应将ie改为y，再加 ing。 lie - lying tie - tying die - dying例写出下列动词的现在分词形式。work _ sing _ play _ study_dance _ have _ write _ take _run _ sit _ shop_ swim_四用法。1. 表示正在进行的动作 例如： I am writing a letter. 我正在写一封信。 They are learning English. 他们正在学英语。 Is it raining now? 现在下雨吗？ The boys are helping their mother. 孩子们正在给母亲帮忙。2. 表示最近一直在做的一件事（但说话时不一定在进行） 例如： I am reading Harry Potter these days. 最近我在读哈里波特。 Are you working hard this term? 这学期你学习用功吗？ He is writing a novel. 他正在写一本小说。3. 表示即将发生的动作 例如： We are going to watch a movie tonight. 晚上我们将要去看电影。 John is coming here next week and will stay here until May. 约翰下周将要来这并呆到五月份。4. 表示总是出现的事情（说话人可能对此有点烦） 例如： He is always borrowing money from me. 他老是找我借钱。 We are constantly eating food. 我们一直在吃东西。注意：1. 当句子中有now时，常表示动作正在进行，这时要用现在进行时。 eg. They are playing basketball now. 2. 以look, listen开头的句子，提示动作正在进行当中，这时要用现在进行时。 eg. Listen！She is singing a song.例用现在进行时完成下列句子。1Mr. Zhang (read) a book now.2. The rabbits (jump) on the grass now.3. Look ! Tom and John (swim)in the sea.4. My brother (make) a kite in his bedroom now.5Listen! Peter is (lie) on the ground outside.时态专项现在进行时【 强化训练 】一用现在进行时完成下列句子。( 30分 )1. They (catch) butterflies now.2. He (do) an experiment now.3. The teachers (run) on the playground now.4. Look! The man (swim) in the lake.5. We (have) an English class now.6. Look! He (dive) in the water now.7. Tom ( watch ) TV in the dining room.8. The doctor (driving ) now.9. The cat (eat) fish now.10.My mother (answer) the phone.二单项选择。( 10分 )1.Is she_now? A)eat B)eating C)eatting D)eats2.The children_football on the playground now. A)is playing B)are playing C)playing D)are playing the 3.Look.Lucy is_her new bike. A)jumping B)running C)riding D)takeing4.Jack is_in the post office with his mather now. A)returning books B)buying a newspaperC)buying stamps D)buying takeaway food5.翻译句子，彼得正在报刊亭买杂志。 A) Peter is buying a newspaper in the library.B) Peter is buying a magazine in the news-stand.B) Peter is buying a story book in the news-stand.三按要求改写下列句子。( 25分 )1. The boy is playing basketball.改为否定句 ：_