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现在进行时态是初中英语中重要的知识点之一，为了帮助同学们更好地掌握这个时态，请你走进“现在进行时”知识档案。
一、基本概念
所谓现在进行时，是表示现在正在进行或发生的动作，或表示当前一段时间内的活动或现阶段正在进行的动作。如：
I’m mending my bike. 我正在修理自行车。
二、基本构成
现在进行时是由“助动词be+v-ing形式(即现在分词)”构成的。运用时，应做到两个“不能”:
1. 不能漏掉“be”，同时注意be(am, is, are)的形式由主语的人称和数决定。如：“她在放风筝。”不能说成“She flying a kite.”，而应说成“She is flying a kite.”。
2. 不能漏掉每个动词后面的“-ing”。如：“我正在做作业。”不能说成“I am do my homework.”，而应说成“I am doing my homework.”。
三、句型结构
1. 肯定式：主语+be+v-ing+其它。如：
He is putting on a new coat. 他正在穿一件新外套。
2. 否定式：主语+be+not+v-ing+其它。如：
He is not(isn’t) cleaning the blackboard. 他没有在擦黑板。
3. 一般疑问式：助动词be+主语+v-ing+其它? 如：
Is Tom playing computer games? 汤姆正在玩电脑游戏吗？
4. 特殊疑问式：特殊疑问词+be+主语+v-ing+其它? 如：
What are they doing now? 他们现在正在干什么？
四、何时用现在进行时
1. 我们知道，不同的时态往往有不同的时间状语与之对应。当句中有now, these days, at this time等时间状语时，应用现在进行时。如：
What are you doing these days? 这些天你在做什么？
2. 以Look!或Listen!开头的句子，提示我们说话时某动作正在进行，应用现在进行时。如：
Look!The children are playing games over there. 瞧！孩子们正在那边做游戏。
Listen!Who is singing in the room? 听！谁在房间里唱歌？
3. 描述图片中人物的动作时常用现在进行时，以示生动。如：
Look at the picture. The boy is drawing. 看这幅图，这个男孩正在画画。
4. 有些句子中可能没有时间状语，但如果表示的是说话时或者现阶段正在进行的动作，就应该用现在进行时。如：
“What’s Lin Tao doing?” “He is playing football.” “林涛在干什么?” “他在踢足球。”
五、现在进行时的特殊用法
英语中，表示位置移动的动词如：come, go, leave, fly, travel, drive, start, walk等常用其现在进行时表示将来的动作。如：
The bus is coming. 公共汽车来了。
Are you leaving for Shanghai tomorrow? 明天你们要去上海吗？
六、不用现在进行时的动词
1. 表示状态的动词be(是)没有进行时态。如：
My father is being at work. (误)
My father is at work. (正)
2. 表示“拥有”的动词have/has没有进行时态。如：
He is having an American friend. (误)
He has an American friend. (正)
3. 感观动词如：see(看见)， hear(听见), smell(闻到)等没有进行时态。如：
He is seeing a bird in a tall tree. (误)
He sees a bird in a tall tree. (正)
4. 表示心理状态的动词如：want(想要)， know(知道)， think(认为)， hope(希望)， remember(记得)， like(喜欢)， love(喜欢、喜爱)等没有进行时态。如：
I am liking playing cards very much. (误)
I like playing cards very much. (正)
七、一般现在时与现在进行时的区别
(一)意义的区别
1． 一般现在时：表示经常发生的、具有规律性或习惯性的动作或状态。如：
I get up at six every morning. 我每天早上6点起床。
He often plays basketball with his friends on Friday. 星期五他经常和朋友们打篮球。
2． 现在进行时：表示现在或现阶段正在发生或持续进行的动作。如：
We are having an English lesson now. 我们现在正在上英语课。
He is reading a new book these days. 这几天他在看一本新书。
(二)构成的区别
1． 一般现在时：(1)当主语是第一人称(单、复数)、第二人称(单、复数)和第三人称复数时，谓语动词用are(I后接am)或行为动词的原形。如：
I’m a middle school student. 我是一名中学生。
I/We/You/They go to school from Monday to Friday.
我/我们/你/你们/他们从星期一到星期五都上学。
(2)当主语是第三人称单数时，其谓语动词用is或行为动词的单数形式，即在动词原形后加-s或-es。如：
That boy is from the USA. 那个男孩来自美国。
His father teaches English in a middle school. 他的父亲在一所中学教英语。
2． 现在进行时：谓语动词由“be+动词的现在分词(v-ing)”构成，be随主语的变化而变化。如：
I’m doing my homework. 我在写作业。
The family are all watching TV now. 全家人现在都在看电视。
(三)时间状语的区别
1. 一般现在时常与often, usually, sometimes, always 等频度副词以及介词短语in the morning, on Sunday等时间状语连用。如：
He often helps his mother do the housework on Sunday. 星期天他经常帮妈妈做家务。
Sometimes they play cards together. 有时候他们在一起打牌。
2. 现在进行时常与now, these days, at the moment (此时，此刻)等时间状语连用；有时也和look, listen等插入语连用，此时，句中的谓语动词应是行为动词。如：
Look!They are playing games over there. 瞧！他们正在那里做游戏。
Listen!Who is singing in the next room? 听！谁在隔壁房间里唱歌？
(四)句式转换的区别
1. 一般现在时的肯定句转换成否定句，谓语动词是be时在be动词之后加not，谓语动词是行为动词时加don’t/doesn’t。转换成疑问句的方法有两种：(1)谓语动词是be时，一般将be提到句首(转换成特殊疑问句时，在be动词之前加疑问词)即可；(2)谓语动词为行为动词时，在句首加do/does来提问(转换为特殊疑问句时，在do或does之前加疑问词)即可。需要说明的是，疑问句中的行为动词应为原形。如：
My mother is a doctor. 我妈妈是位医生。
→My mother isn’t a doctor. (否定句)
→Is your mother a doctor? (一般疑问句)
→What is your mother? (特殊疑问句)
He goes to school at seven o’clock in the morning. 他早上7点钟上学。
→He doesn’t go to school at seven o’clock in the morning. (否定句)
→Does he go to school at seven o’clock in the morning? (一般疑问句)
→What time does he go to school in the morning? (特殊疑问句)
2． 现在进行时的肯定句转换成否定句时只需在be之后加not即可；转换成一般疑问句时，只需将be提前(转换成特殊疑问句时，在be之前加疑问词)即可。如：
They are cleaning the classroom. 他们在打扫教室。
→They aren’t cleaning the classroom. (否定句)
→Are they cleaning the classroom? (一般疑问句)
→What are they doing? (特殊疑问句)
[跟踪练习]
Ⅰ. 用括号内所给单词的适当形式填空。
1. There ____(be) a desk and two chairs in my room.
2. “____ the boy ____(watch) TV now?” “No, he isn’t.”
3. “Where ____ Lily ____(live)?” “She ____(live) in China.”
4. I ____(do) my homework now. I often ____(do) my homework in the evening.
5. Jack ____(like) watching TV. He ____(watch) TV every evening. But now he ____(not watch)
TV. He ____(read) a storybook.
6. Lucy ____(have) lunch at school now. She usually ____(have) lunch at school.
7. “Listen!Who ____(sing) in the next room?” “Er, it’s Kate. She ____(sing) in her room
every day. She ____(sing) quite well.”
8. She can ____(swim) now.
9. ____ your aunt ____(come) to see you every week?
10. It’s time to get up. Bill ____(put) on his clothes.
Ⅱ. 按括号内的要求改写下列句子。
1. Tom has some picture books. (改为否定句)
Tom ____ ____ ____ picture books.
2. Mr Green is watching TV at home now. (改为一般现在时)
Mr Green often ____ ____ at home.
3. Li Lei goes to bed at half past nine. (对划线部分提问)
What time ____ Li Lei ____ to bed?
4. He is at work now. (用现在进行时改为同义句)
He ____ ____ now.
5. What’s his job? (改为同义句)
What ____ he ____?
[Key:Ⅰ.1.is 2.Is; watching 3.does; live; lives 4.am doing; do 5.likes; watches; isn’t watching; is reading 6.is having; has 7.is singing; sings; sings 8.swim 9.Does; come 10.is putting Ⅱ.1.doesn’t have any 2.watches TV 3.does; go 4.is working 5.does; do]
一、基本概念
所谓现在进行时，是表示现在正在进行或发生的动作，或表示当前一段时间内的活动或现阶段正在进行的动作。如：
I’m mending my bike. 我正在修理自行车。
二、基本构成
现在进行时是由“助动词be+v-ing形式(即现在分词)”构成的。运用时，应做到两个“不能”:
1. 不能漏掉“be”，同时注意be(am, is, are)的形式由主语的人称和数决定。如：“她在放风筝。”不能说成“She flying a kite.”，而应说成“She is flying a kite.”。
2. 不能漏掉每个动词后面的“-ing”。如：“我正在做作业。”不能说成“I am do my homework.”，而应说成“I am doing my homework.”。
三、句型结构
1. 肯定式：主语+be+v-ing+其它。如：
He is putting on a new coat. 他正在穿一件新外套。
2. 否定式：主语+be+not+v-ing+其它。如：
He is not(isn’t) cleaning the blackboard. 他没有在擦黑板。
3. 一般疑问式：助动词be+主语+v-ing+其它? 如：
Is Tom playing computer games? 汤姆正在玩电脑游戏吗？
4. 特殊疑问式：特殊疑问词+be+主语+v-ing+其它? 如：
What are they doing now? 他们现在正在干什么？
四、何时用现在进行时
1. 我们知道，不同的时态往往有不同的时间状语与之对应。当句中有now, these days, at this time等时间状语时，应用现在进行时。如：
What are you doing these days? 这些天你在做什么？
2. 以Look!或Listen!开头的句子，提示我们说话时某动作正在进行，应用现在进行时。如：
Look!The children are playing games over there. 瞧！孩子们正在那边做游戏。
Listen!Who is singing in the room? 听！谁在房间里唱歌？
3. 描述图片中人物的动作时常用现在进行时，以示生动。如：
Look at the picture. The boy is drawing. 看这幅图，这个男孩正在画画。
4. 有些句子中可能没有时间状语，但如果表示的是说话时或者现阶段正在进行的动作，就应该用现在进行时。如：
“What’s Lin Tao doing?” “He is playing football.” “林涛在干什么?” “他在踢足球。”
五、现在进行时的特殊用法
英语中，表示位置移动的动词如：come, go, leave, fly, travel, drive, start, walk等常用其现在进行时表示将来的动作。如：
The bus is coming. 公共汽车来了。
Are you leaving for Shanghai tomorrow? 明天你们要去上海吗？
六、不用现在进行时的动词
1. 表示状态的动词be(是)没有进行时态。如：
My father is being at work. (误)
My father is at work. (正)
2. 表示“拥有”的动词have/has没有进行时态。如：
He is having an American friend. (误)
He has an American friend. (正)
3. 感观动词如：see(看见)， hear(听见), smell(闻到)等没有进行时态。如：
He is seeing a bird in a tall tree. (误)
He sees a bird in a tall tree. (正)
4. 表示心理状态的动词如：want(想要)， know(知道)， think(认为)， hope(希望)， remember(记得)， like(喜欢)， love(喜欢、喜爱)等没有进行时态。如：
I am liking playing cards very much. (误)
I like playing cards very much. (正)
七、一般现在时与现在进行时的区别
(一)意义的区别
1． 一般现在时：表示经常发生的、具有规律性或习惯性的动作或状态。如：
I get up at six every morning. 我每天早上6点起床。
He often plays basketball with his friends on Friday. 星期五他经常和朋友们打篮球。
2． 现在进行时：表示现在或现阶段正在发生或持续进行的动作。如：
We are having an English lesson now. 我们现在正在上英语课。
He is reading a new book these days. 这几天他在看一本新书。
(二)构成的区别
1． 一般现在时：(1)当主语是第一人称(单、复数)、第二人称(单、复数)和第三人称复数时，谓语动词用are(I后接am)或行为动词的原形。如：
I’m a middle school student. 我是一名中学生。
I/We/You/They go to school from Monday to Friday.
我/我们/你/你们/他们从星期一到星期五都上学。
(2)当主语是第三人称单数时，其谓语动词用is或行为动词的单数形式，即在动词原形后加-s或-es。如：
That boy is from the USA. 那个男孩来自美国。
His father teaches English in a middle school. 他的父亲在一所中学教英语。
2． 现在进行时：谓语动词由“be+动词的现在分词(v-ing)”构成，be随主语的变化而变化。如：
I’m doing my homework. 我在写作业。
The family are all watching TV now. 全家人现在都在看电视。
(三)时间状语的区别
1. 一般现在时常与often, usually, sometimes, always 等频度副词以及介词短语in the morning, on Sunday等时间状语连用。如：
He often helps his mother do the housework on Sunday. 星期天他经常帮妈妈做家务。
Sometimes they play cards together. 有时候他们在一起打牌。
2. 现在进行时常与now, these days, at the moment (此时，此刻)等时间状语连用；有时也和look, listen等插入语连用，此时，句中的谓语动词应是行为动词。如：
Look!They are playing games over there. 瞧！他们正在那里做游戏。
Listen!Who is singing in the next room? 听！谁在隔壁房间里唱歌？
(四)句式转换的区别
1. 一般现在时的肯定句转换成否定句，谓语动词是be时在be动词之后加not，谓语动词是行为动词时加don’t/doesn’t。转换成疑问句的方法有两种：(1)谓语动词是be时，一般将be提到句首(转换成特殊疑问句时，在be动词之前加疑问词)即可；(2)谓语动词为行为动词时，在句首加do/does来提问(转换为特殊疑问句时，在do或does之前加疑问词)即可。需要说明的是，疑问句中的行为动词应为原形。如：
My mother is a doctor. 我妈妈是位医生。
→My mother isn’t a doctor. (否定句)
→Is your mother a doctor? (一般疑问句)
→What is your mother? (特殊疑问句)
He goes to school at seven o’clock in the morning. 他早上7点钟上学。
→He doesn’t go to school at seven o’clock in the morning. (否定句)
→Does he go to school at seven o’clock in the morning? (一般疑问句)
→What time does he go to school in the morning? (特殊疑问句)
2． 现在进行时的肯定句转换成否定句时只需在be之后加not即可；转换成一般疑问句时，只需将be提前(转换成特殊疑问句时，在be之前加疑问词)即可。如：
They are cleaning the classroom. 他们在打扫教室。
→They aren’t cleaning the classroom. (否定句)
→Are they cleaning the classroom? (一般疑问句)
→What are they doing? (特殊疑问句)
[跟踪练习]
Ⅰ. 用括号内所给单词的适当形式填空。
1. There ____(be) a desk and two chairs in my room.
2. “____ the boy ____(watch) TV now?” “No, he isn’t.”
3. “Where ____ Lily ____(live)?” “She ____(live) in China.”
4. I ____(do) my homework now. I often ____(do) my homework in the evening.
5. Jack ____(like) watching TV. He ____(watch) TV every evening. But now he ____(not watch)
TV. He ____(read) a storybook.
6. Lucy ____(have) lunch at school now. She usually ____(have) lunch at school.
7. “Listen!Who ____(sing) in the next room?” “Er, it’s Kate. She ____(sing) in her room
every day. She ____(sing) quite well.”
8. She can ____(swim) now.
9. ____ your aunt ____(come) to see you every week?
10. It’s time to get up. Bill ____(put) on his clothes.
Ⅱ. 按括号内的要求改写下列句子。
1. Tom has some picture books. (改为否定句)
Tom ____ ____ ____ picture books.
2. Mr Green is watching TV at home now. (改为一般现在时)
Mr Green often ____ ____ at home.
3. Li Lei goes to bed at half past nine. (对划线部分提问)
What time ____ Li Lei ____ to bed?
4. He is at work now. (用现在进行时改为同义句)
He ____ ____ now.
5. What’s his job? (改为同义句)
What ____ he ____?
[Key:Ⅰ.1.is 2.Is; watching 3.does; live; lives 4.am doing; do 5.likes; watches; isn’t watching; is reading 6.is having; has 7.is singing; sings; sings 8.swim 9.Does; come 10.is putting Ⅱ.1.doesn’t have any 2.watches TV 3.does; go 4.is working 5.does; do]