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现在进行时表示此时此刻或现阶段正在进行的动作。需要注意的是，一些表示感觉、情感、看法、愿望、心理状态(love, think, wish, forget, feel, hope) 等的动词一般不用进行时。
一、现在进行时的结构
现在进行时的结构是：助动词be+动词的现在分词。
1．be(am, is, are)随主语的人称、单复数而变化。
2．现在分词的变化规则：
1)一般在动词的词尾加上-ing。如：do-doing; clean-cleaning; play-playing; study-studying。2)以不发音的元音字母e结尾的单词，去掉不发音的元音字母e，然后加上-ing。如：take-taking; make-making; give-giving。3）以重读闭音节结尾，词尾只有一个辅音字母的单词，先双写词尾的辅音字母，然后再加-ing。如：put-putting; sit-sitting; shop-shopping; swim-swimming。
二、现在进行时的常见句式
1．肯定句：主语+be(am, is, are)+现在分词+其他。例如：
I am doing my homework. 我正在做作业。
He is watching TV now. 他现在正在看电视。
It is raining. 天正在下雨。
They are playing soccer. 他们正在踢足球。
2．否定句：主语+be(am, is, are)+not+现在分词+其他。例如：
She is not(isn’t) reading a book. 她没在看书。
I am not writing a letter. 我没在写信。
We are not(aren’t) playing cards. 我们没在打扑克。
3．一般疑问句：Be(am, is, are)+主语+现在分词+其他？肯定回答：Yes, 主语+be(am, is, are).；否定回答：No, 主语+be(am, is, are) not.。例如：
“Are you eating dinner?” “Yes, we are./No, we aren’t.”
“你们在吃饭吗？”“是的，我们在吃饭。/不，我们没在吃饭。”
“Is she swimming now?” “Yes, she is./No, she isn’t.”
“她现在在游泳吗？” “是的，她在游泳。/不，她不在游泳。”
“Are they playing computer games?” “Yes, they are./No, they aren’t.”
“他们在玩电子游戏吗？” “是的，他们在玩。/不，他们没玩。”
4.特殊疑问句：疑问词+一般疑问句？例如：
What are you doing for vacation? 你假期打算做什么？
When is he going camping? 他打算什么时候去野营？
Where is she going? 她打算去哪儿？
Who are you going there with? 你打算和谁一起去那里？
三、现在进行时的一些特殊用法
1．现在进行时有时可以用来表示一个在最近按计划或安排要进行的动作。在这种句子中，谓语动词往往是一些表示位置移动的单词(go, come, leave, start, arrive, stay)，且句子中常有一个表示将来的时间状语。例如：
We are leaving on Friday. 我们星期五动身。
How many of you are coming to the party? 你们有多少人要来参加聚会？
Are you staying here till next week? 你要在这儿待到下星期吗？
We are going to the People’s Park tomorrow. 明天我们要到人民公园去。
2．现在进行时有时用来代替一般现在时，强调一种感情。例如：
How are you feeling today?你今天觉得怎么样？（比How do you feel today?显得亲切）
Xiao Hua is doing fine work at school.
肖华在学校学习很不错。（比Xiao Hua does fine work at school. 更富有赞美的意思）
He is usually leaving things about. 他老是把东西乱扔。（表示不满）
New products are appearing all the time. 新产品不断涌现。（表示满意）
3．在强调动作的暂时性时，可用现在进行时来代替一般现在时。例如：
He is sleeping in the next room now.
他现在是在隔壁房间里睡了。（即不在原来的房间里睡了）
I am not hearing as well as I used to. 我的听力没有过去好了。
4．be的现在进行时可用来强调一时的表现。例如：
She is being friendly. 她这样是为了表示友好。
巩固练习：Ⅰ.将下列句子改为现在进行时。
1. They often have an English class.
2. He usually wears a T-shirt.
3. We look at the pictures every day.
4. She often waits for me.
5. They often have a party on Saturday.
Ⅱ.将下列句子译成英语。
1. 他们明天要动身去澳大利亚。
2. 看！男孩子们正在观看篮球赛。
3. “南希在哪儿？” “她正在擦窗子。”
4. 很多人早上在公园里做运动。
5. 听！他们正在谈论神舟六号。
[Key:Ⅰ.1.They are having an English class. 2.He is wearing a T-shirt. 3.We are looking at the pictures. 4.She is waiting for me. 5.They are having a party now. Ⅱ.1.They are leaving for Australia tomorrow. 2.Look!The boys are watching the basketball game. 3.“Where is Nancy?” “She is cleaning the window.” 4.Many people are playing sports in the park in the morning. 5.Listen!They are talking about the Shenzhou Ⅵ.]
一、现在进行时的结构
现在进行时的结构是：助动词be+动词的现在分词。
1．be(am, is, are)随主语的人称、单复数而变化。
2．现在分词的变化规则：
1)一般在动词的词尾加上-ing。如：do-doing; clean-cleaning; play-playing; study-studying。2)以不发音的元音字母e结尾的单词，去掉不发音的元音字母e，然后加上-ing。如：take-taking; make-making; give-giving。3）以重读闭音节结尾，词尾只有一个辅音字母的单词，先双写词尾的辅音字母，然后再加-ing。如：put-putting; sit-sitting; shop-shopping; swim-swimming。
二、现在进行时的常见句式
1．肯定句：主语+be(am, is, are)+现在分词+其他。例如：
I am doing my homework. 我正在做作业。
He is watching TV now. 他现在正在看电视。
It is raining. 天正在下雨。
They are playing soccer. 他们正在踢足球。
2．否定句：主语+be(am, is, are)+not+现在分词+其他。例如：
She is not(isn’t) reading a book. 她没在看书。
I am not writing a letter. 我没在写信。
We are not(aren’t) playing cards. 我们没在打扑克。
3．一般疑问句：Be(am, is, are)+主语+现在分词+其他？肯定回答：Yes, 主语+be(am, is, are).；否定回答：No, 主语+be(am, is, are) not.。例如：
“Are you eating dinner?” “Yes, we are./No, we aren’t.”
“你们在吃饭吗？”“是的，我们在吃饭。/不，我们没在吃饭。”
“Is she swimming now?” “Yes, she is./No, she isn’t.”
“她现在在游泳吗？” “是的，她在游泳。/不，她不在游泳。”
“Are they playing computer games?” “Yes, they are./No, they aren’t.”
“他们在玩电子游戏吗？” “是的，他们在玩。/不，他们没玩。”
4.特殊疑问句：疑问词+一般疑问句？例如：
What are you doing for vacation? 你假期打算做什么？
When is he going camping? 他打算什么时候去野营？
Where is she going? 她打算去哪儿？
Who are you going there with? 你打算和谁一起去那里？
三、现在进行时的一些特殊用法
1．现在进行时有时可以用来表示一个在最近按计划或安排要进行的动作。在这种句子中，谓语动词往往是一些表示位置移动的单词(go, come, leave, start, arrive, stay)，且句子中常有一个表示将来的时间状语。例如：
We are leaving on Friday. 我们星期五动身。
How many of you are coming to the party? 你们有多少人要来参加聚会？
Are you staying here till next week? 你要在这儿待到下星期吗？
We are going to the People’s Park tomorrow. 明天我们要到人民公园去。
2．现在进行时有时用来代替一般现在时，强调一种感情。例如：
How are you feeling today?你今天觉得怎么样？（比How do you feel today?显得亲切）
Xiao Hua is doing fine work at school.
肖华在学校学习很不错。（比Xiao Hua does fine work at school. 更富有赞美的意思）
He is usually leaving things about. 他老是把东西乱扔。（表示不满）
New products are appearing all the time. 新产品不断涌现。（表示满意）
3．在强调动作的暂时性时，可用现在进行时来代替一般现在时。例如：
He is sleeping in the next room now.
他现在是在隔壁房间里睡了。（即不在原来的房间里睡了）
I am not hearing as well as I used to. 我的听力没有过去好了。
4．be的现在进行时可用来强调一时的表现。例如：
She is being friendly. 她这样是为了表示友好。
巩固练习：Ⅰ.将下列句子改为现在进行时。
1. They often have an English class.
2. He usually wears a T-shirt.
3. We look at the pictures every day.
4. She often waits for me.
5. They often have a party on Saturday.
Ⅱ.将下列句子译成英语。
1. 他们明天要动身去澳大利亚。
2. 看！男孩子们正在观看篮球赛。
3. “南希在哪儿？” “她正在擦窗子。”
4. 很多人早上在公园里做运动。
5. 听！他们正在谈论神舟六号。
[Key:Ⅰ.1.They are having an English class. 2.He is wearing a T-shirt. 3.We are looking at the pictures. 4.She is waiting for me. 5.They are having a party now. Ⅱ.1.They are leaving for Australia tomorrow. 2.Look!The boys are watching the basketball game. 3.“Where is Nancy?” “She is cleaning the window.” 4.Many people are playing sports in the park in the morning. 5.Listen!They are talking about the Shenzhou Ⅵ.]