现在进行时
一、概念：
现在进行时表示现在或当前一段时间正在进行的动作。可以表示有计划的未来，也就是用现在进行时表示将来。 二、构成：
现在进行时由\"be+v-ing\"构成。be应为助动词，初学者最容易漏掉，它应与主语的人称和数保持一致。 三、句式：
肯定句式：主语+be( am, is, are)+现在分词+其它. 否定句式：主语+be(am, is, are) +not +现在分词+其它. 一般疑问句：Be(am, is, are) +主语+现在分词+其它？ 特殊疑问句：疑问词+be(am, is, are)+主语+现在分词+其它？
对现在进行时的特殊疑问句的回答，它不可以用Yes或No直接作答，要根据实际情况回答。 四、常见用法：
(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。如： They are playing basketball now.现在他们正在打篮球。
(2)以look, listen开头的句子，提示我们动作正进行，这时要用现在进行时。如： Listen！She is singing an English song.听，她正在唱英语歌。
(3)表示当前一段时间或现阶段正在进行的动作，且此时有this week, these days等时间状语，这时常用现在进行时。如：
We are making model planes these days.这些天我们在做飞机模型。
(4)描述图片中的人物的动作，也为了表达更生动。此时也常用现在进行时。如： Look at the picture. The children are flying kites in the park.看这幅图，那些孩子正在公园放风筝。 五、其它用法：
1、表示说话时正在进行或发生的动作。
Please don't make so much noise. I'm writing a composition. 不要吵闹。我正在写作文。 Let's set off. It isn’t raining now. 咱们出发吧。现在不下雨了。
【注】这类情况常与now现在，at the present现在，at the moment现在，today今天，this week这个星期，this year今年等时间状语连用。有时通过上下文可以判断出应采用何种时态，如：
It's four o'clock in the afternoon. The children are playing football on the sports ground. 现在是下午四点。孩子们在操场上踢足球。
Hurry up! We are all waiting for you. 快点！我们大家都等着你。
Look! They are reading over there under the tree. 看！他们在那边的树底下看书。 Listen! She is singing in the room. 听！她在房间里唱歌。
Where is Kate? She is reading in the room. 凯特在哪里？她在房间里看书。 Why are you crying? Is something wrong? 为什么哭呢？有什么不对？
2、表示现阶段正在进行而说话时不一定在进行的动作。
We are working in a factory these days. 这几天我们在一家工厂工作。
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They are compiling a dictionary. 他们在编一本词典。
【注】这类情况常与today今天，this week这个星期，this evening今天晚上，these days现在、目前等时间状语连用。
3、在口语中表示主语计划将要作的动作。
They are leaving for New York tomorrow. 明天他们将要动身前往纽约。 Is your brother departing soon? 你的兄弟很快就要启程吗？
【注】这类情况常与come来，go去， leave离开，depart离开，arrive到达，stay逗留，start开始等动词连用。所用的动词必须是动作而不是状态，主语必须是人。 4、现在进行时与always等副词连用时带有感情色彩。 He's always quarrelling with others. 他老喜欢跟别人吵架。
She is constantly worrying about her son's health. 她不停地为她儿子的健康担心着。 The boy is forever asking questions. 那个男孩老是问问题。
【注】这类情况常与always总是，usually通常，continually不断的，constantly经常的，forever永远、老是等副词连用。
5、有的现在进行时句子和一般现在时同义。用现在进行时表示问者的关切心情。 How are you feeling today? （How do you feel today?）你今天感觉如何？ I am looking （look）forward to your next visit. 我盼望你下次再来。
Why are you looking（do you look）so sad? 为什么你看起来这么愁眉苦脸的样子呢？ 6、有的动词用于现在进行时表示“逐渐”的含义。此种用法除了偶尔和now连用外，一般不和其他时间副词连用的。
Our study is becoming more interesting. 我们的学习变得越来越有趣了。 The leaves are turning red. 树叶渐渐地变红了。 The war is ending. 战争接近尾声了。
Wait a moment; I am finishing my supper. 等一会儿，我的晚饭就要吃完了。
【注】适合于此种用法的动词有：bet/grow/become/turn/run/go变成，begin开始，forget忘记，remember记得，die死，finish完成，find发现，rise增强等.
7、“be”动词的现在进行时。“be”动词用于现在进行时表示说话者认为是短暂的、和平常不一样的、甚至是伪装的。 He is being foolish. 他在装傻。
He is being honest. 他表现得特别老实。 She is being rude. 她故意表现粗鲁。
I can't understand why he is being so selfish.我不明白此时他为何如此自私。
【注】适合于此种用法的有：foolish愚蠢的，nice好的，kind好心的，careful细心的，patient耐心的，lazy懒惰的，silly傻的，rude粗鲁的，polite礼貌的，impolite无礼的等表示人的特性、性格的形容词。（“be”动词用于现在进行时表示人的行为，纯粹表示心理或生理的状态而不带有行动时或主语不是人时，“be”动词不能用于现在进行时）如： I am happy.（表语是纯粹的心理状态，不可用am being） 我很快乐。 He's tired.（表语是纯粹的生理状态，不可用is being） 他很疲倦。
It's hot today.（主语不是人，不可用is being） 今天很热。 常和现在进行时连用的时间状语
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现在进行时专项练习
一、 单项选择。
1、Both his parents look sad . Maybe they ______what's happened to him . A. knew B. have known C. must know D.will know
2、He has _______ been to Shanghai , has he ?A. already B.never C.ever D.still 3、Have you met Mr Li ______？ A. just B. ago C.before D. a moment ago
4、The famous writer _____ one new book in the past two year .
A. is writing B.was writing C.wrote D.has written 5、—Our country ______ a lot so far . —Yes . I hope it will be even ______ .
A.has changed ; well B.changed ; good C.has changed ; better D.changed ; better 6、Zhao Lan ______already ______in this school for two years .
A. was ; studying B. will ; study C. has ; studied D. are ; studying 7、We ______ Xiao Li since she was a little girl .
A. know B. had known C. have known D. knew 8、Harry Potter is a very nice film .I______ it twice .
A.will see B.have seen C.saw D.see
9、—These farmers have been to the United States . —Really ? When _____ there ?
A. will they go B. did they go C. do they go D. have they gone 10、—______ you ___ your homework yet ? —Yes . I _____ it a moment ago . A.Did ; do ; finished B.Have ; done ; finished C.Have ; done ; have finished D.will ; do ; finish 11、 His father ______ the Party since 1978 .
A. joined B. has joined C. was in D. has been in 12、—Do you know him well ?
— Sure .We _________ friends since ten years ago .
A. were B. have been C. have become D. have made 13、—How long have you ____ here ?
—About two months . A. been B. gone C. come D. arrived
14、Hurry up! The play __________ for ten minutes .
A. has begun B. had begun C. has been on D. began 15、 It _____ ten years since he left the army .
A. is B. has C. will D. was 16、 Miss Green isn't in the office . she_______ to the library . A.has gone B. went C.will go D. has been 17、My parents ______ Shandong for ten years .
A. have been in B. have been to C. have gone to D. have been
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18、The students have cleaned the classroom, ?
A. so they B. don’t they C. have they D. haven’t they
19、 has Mr White been a member of Greener China since he to China? A. How soon, comes B. How often, got C. How long, came D. How far, arrived 20、 His uncle for more than 9 years.
A. has come here B. has started to work C. has lived there D. has left the university 21.When he arrived at the bus stop, the bus _____ for 20 minutes. A. has left B. had left C. has been away D. had been away
22. I ______ the League for 5 years so far. A. joined B. have joined C. have been in
23.The factory ____ since the February of 1988. A . has been open B. has opened C. was open D. opened
24.Mary and Rose ____friends since they met in 2000. A. have made B. have been C. made D. have become
25.You mustn't_____ until he comes back. A. be away B. leave C. be left 26.The meeting _____ for a week now. A. has finished B. has ended C. has been over
27.Miss Gao ______ this school for nearly 5 years. A. has been in B. has come to C. has taught
28.Ben ______ a teacher for 4 years . A. has been B. has become C. was D. became 二、 句型转换。
1、He has never surfed, ?（改成反意疑问句）
2、They have been here since 2000. (对划线部分提问) have they been here?
3、The old man _______ last year. He for a year. (die) （动词填空） 4、This factory opened twenty years ago.(同义句转换)
This factory ________ for twenty years.
5、Miss Gao left an hour ago. (同义句转换) Miss Gao _____ ____ _____ _____ an hour ago.
6、Her mother has been a Party member for three years .（同义句） Her mother _______ the Party three years ________ . 7、The Green Family moved to France two years ago. (同义句转换)
_______ two years ________ the Green family moved to France.
8、The bus has arrived here. It arrived ten minutes ago. (把两个句子合并成一个句子)
___________________________________________ 三、 汉译英。
1、 吉姆已做完作业，他现在有空了。 2、 他昨天收到一封信。 3、 我父亲以前到过长城。 4、 她还没有看过那部新电影。 5、 她去过上海。
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6、 他这些天上哪儿去了？
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