《Man's best friends》Unit 4 Save the trees.（Grammar）
The present continuous tense
1.We use the present continuous tense to show that something is happening now.
2.We also use the present continuous tense to talk abotemporary situations.ut
It is often used with:
now,at the moment,right now,look,listen
We are stay at Peter's house now.
The students are listening to Miss Li carefully.
Is Linda doing her homework at home right now?
What are you doing at the moment?
Listen,the singer is singing on the stage.
Look,Michael is playing the guitar.
Why is he crying?
3.现在进行时还表示当前一段时间或现阶段正在进行（但说话时不一定在进行）的动作。常与this week,these days等时间状语连用。
We are planting trees this week.
The students are working hard these days.
We are making model planes these days.
Look at the picture,the children are flying kites in the park.
This is the structure of a sentence in the present continuous tense.
I am eating now.
What are they doing?
What is she doing?
What's he doing? He is...
What's the girl doing?She is ...
What are they doing?they are...
We form the present continuous tense with the verb to be +the -ing form of the main verb.
We form the-ing form of the main verb like this:
|Main verb||-ing form||Example|
|Verbs ending in -e||
|Verbs ending in -ie||
|Some verbs enging in a vowe!||Double the cosonant||run→running|
|letter+a consonant letter||letter+ing|
Look at them carefully!
What's he/she doing? He/she is...
walking drawing dancing eating
What are they doing?
They are reading books in a bookshop.
What are you doing?
We are buying some food in a supermarket.
Tom is playing football.
Lucy read a book.
A Katie is on holiday with her friends.She is telling Alex what everyone is doing.Look at the picture below and complete hte conversation with the verb in brackets.
Katie:Hi,Alex.We _______ (have)fun at the beach.
Alex:What _____everyone _____(do)?
Katie:Ted________(play)volleyball with Carol.Jenny and Henry_____(play)badminton.
Grace ________(fish).Ivan ______(swim)in the sea.Laura and Johnny ______ (lie) on the beach.Laura _____(eat) an ice cream too.Jim _______(play) the guitar.And I _______(talk) to you on the phone.Alex.
We do not usually use the verbs in the box below in the present contiuous tense.Instead,we use them in the simple present tense.
believe hear like prefer smell understand
hate know love see taste want
I know the answer now.(√)
I am knowing the answer now.(×)
She likes this poem.(√)
She is liking this poem.(×)
Look at the pictures below and complete the conversations with the verbs in brackets.
Sam:I ______(know),but I'm very busy,Could you answer it,please?
Mary:I _____(think)about what to weat to jane's birthday party tonight.Can you help me?
Ann:Sure,I ______(prefer) the long dress.
Fred:That ________(smell)very nice.What ___ you ______(eat),Tom?
Tom:I ________(eat)some cake._______you _____(want) some?
Next month my family is moving to Beijing.
My aunt is leaving for Shanghai at eleven o'clock tomorrow morning.
（1）当句子中有now,at the resent,at the moment(现在)时,常表示动作正在进行，或者告诉你一个准确的现在时间，这时要用现在进行时。如：
They are playing basketball now.现在他们正在打篮球。
Listen！She is singing an English song.听，她正在唱英语歌。
（3）当局中出现的时间状语是today,these days,this week,this month等时，如果句子所要表达的意义是在这一阶段正在翻身的事，则动词应用现在进行时。如：
We are making model planes these day.这些天我们在做飞机模型。
Look at the picture.The children are flying kites in the park.
They are leaving for New York tomorrow.明天他们将要动身前往纽约。
Is your brohter departing soon? 你的兄弟很快就要启程吗？