If I am happy, I will sing. If I am happy, I will…. what will you do If you are happy?

If you have a robot, what will you do?  play games  clean my bedroom  do homework for me If I have a robot, I will let it…

What will happen if you get up at 9:00 this morning ? If I get up at 9:00, I will be late.

What will happen if you are late for school? If I am late, my teacher won’t let me in. If I am late, my teacher will be angry with me.

Do you know him? He is… He is Bill Gates. He is very rich and famous.

A:If you have lots of money, what will you do? B:If I have lots of money, I will …

If I’m rich,I’ll buy a big house.

If I am rich, I will buy a sports car.

If I am rich, I will help the poor.

A:If it is fine tomorrow,what will you do? B:If it is fine tomorrow, I’ll …

if 从 句 主句 位置： if 引导的条件状语从句，既可放在 主句之前，也可放在主句之后。当从句置 于主句之前时，常用逗号与主句隔开。 If you take the bus to the party, you will be late. 这个句子可以改写为： You will be late if you take the bus to the party. if 从句 主句

if 条件状语从句中，主句用一 般将来时，从句用一般现在 时表示将来。 If you won’t hurry up, you will miss the early bus. If you don’t hurry up, you will miss the early bus. What’s the rule? （ 1 ） If you..., you will...

if will she, call me, I, tell her about it If she calls me, I will tell her about it. ▼

you, join the Lions, If you join the Lions, you will become a good soccer player. go you, become a good soccer player

you, become a professional player, If you become a professional player, you will be tired. go you, be tired,

Michael, work hard If Michael works hard, he will make more money. go he, make more money

it, snow If it snows, we will not go out. go we, not go out

If you don’t get up, you will be late. go you, not get up you, be late

if 条件状语从句中，如果主句 有 must ， can ， may 等情态动 词，从句用一般现在时 。 You must stop if the traffic light is red. You may go fishing if you are free. He can go home if he finishes his homework. What’s the rule? （ 2 ）

if 条件状语从句中，如果主句 是祈使句，从句用一般现在时。 Let me know if he comes. Don’t wait for me if I am late. Put up your hands if you have any questions. What’s the rule? （ 3 ）

2. If 条件状语从句中，如果主句有 must ， can ， may 等情态动词，从句用一般现在 时。（主情从现） 3. If 条件状语从句中，如果主 句是祈使句，从句用一般现 在时。（主祈从现） 1. If 条件状语从句中，主句用一般将来时， 从句用一般现在时表示将来。（主将从现） Rules

补充： 1. 当主句的谓语是 hope, want, wish 等动词时， 从句也要使用一般现在时。 I want to go there if the rain stops. 2. If 引导的条件状语从句可以转换为 祈使句 +and+ 另一个句子 如果 if 从句是否定句，则为： 祈使句 +or+ 另一个句子 If you work hard, you will get good grades. Work hard, and you will get good grades. If you don’t work hard, you won’t get good grades. Work hard, or you won’t get good grades.

仿照例子把两句话合成一句话。 Example: a. You think you’ re going to visit New York City. b. You will see some tall buildings. → If you go to visit New York City, you’ll see some tall buildings.

1. a. You think you’re going to study English hard. b. You will do better in English. 2. a. You think you’re going to eat and drink more. b. You will be fatter. → If you study English hard, you’ll do better in English. → If you eat and drink more, you’ll be fatter.

3. a. They think they are going to do more exercise. b. Their health will be better. 4. a. I think you are going to let me watch TV. b. I will stay at home. → Their health will be better if they do more exercise. → I will stay at home if you let me watch TV.

What will you do if you can be a teacher one day? Discuss with your partner:

What will you do if you don’t have classes tomorrow? Discuss with your partner:

What will you do if you don’t finish your homework? Discuss with your partner:

Look at the pictures and match the statements with them. 1. ___ I think I’ll wear jeans to the party. 2. ___ I think I’ll stay at home. 3. ___ I think I’ll take the bus to the party. 4. ___ I think I’ll go to the party with Karen and Anna. 1a c d b a

statementsResponses 1. __ I think I’ll wear jeans to the party. If you do, the teachers won’t __________. 2. __ I think I’ll stay at home. If you do, you’ll _________. 3. __ I think I’ll take the bus to the party. If you do, you’ll _______. 4. __ I think I’ll go to the party with Karen and Anna. If you do, you’ll ______ ___________ c d b a let you in be sorry be late have a great time. Listen and complete the responses. 1b

3.If Mary (buy) the book, she will use up all her money. 1.If I (be) free, I’ll visit my aunt next Sunday. 4.If I (study) hard, I’ll win the English competition. 2.If it (be) cold tomorrow, I will wear my sweater. am is buys study Exercise (1): 5. If a UFO (land) in front of me, I (go) in to look for the alien. landswill go

Exercise (2): 1.Call me if the boss (will come/comes). comes 2. She must see a dentist if she (has/will have) a toothache. has 3.Have a good rest if you (will be/are) tired. are 4.You can go shopping with your sister if you (have/will have) time this afternoon. have 5.If there (will be/ is) a car accident, they (will call/call) 110 at once. is will call

Dear Jenny, Thanks for inviting me to the party. Of course present, you are happy. I hope it won’t rain that day. Because if it won’t rain, my little son will come, too. If he comes, you aren’t disappointed, he is really funny. OK, see you on the party. Yours, will be doesn’t give won’t be I’ll go to the party. And I think if I will give you a Rose

1. The students are talking about when to have (a class party / a class meeting / a birthday party). 2. They plan to have it on (Friday evening / Saturday afternoon / Saturday evening). Listen and circle the correct answers to complete the sentences. 2a

Listen again. Choose the correct short answer in the box to answer each question. 1. What will happen if they have the party today? Half the class won’t come. 2b half the class won’t come some students will be bored make some food students will leave early the party games Students will leave early. 2. What will happen if they have the party tomorrow? Some students will be bored. 3. What will happen if they watch a video at the party? The party games. 4. What will Mark organize? Make some food. 5. What will Nelly do?