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1、 Section A Grammar FocusSection A Grammar FocusUnit 10 If you go to the party, youll have a good time!I think Ill take the bus to the party. If you do, youll be late.I think Ill stay at home. If you do, youll be sorry.What will happen if they have the party today? If they have it today, half the cla
2、ss wont come.Should we ask people to bring food? If we ask people to bring food, theyll just bring potato chips and chocolate.Read the sentencesI will have a good time tomorrow.I will go to the party tomorrow.If I go to the party tomorrow, Ill have a good time.合并合并if引导一个条件状语从句引导一个条件状语从句 当主句是一般将来时时当主
3、句是一般将来时时, if引导的从句必须用引导的从句必须用现在时来表示将来可能发生的动作或存在的状态。现在时来表示将来可能发生的动作或存在的状态。Grammar Focus: if 条件句条件句在英语里在英语里, 当句子的主句为将来时态时当句子的主句为将来时态时, 它所引导的它所引导的时间状语从句和条件状语从句都使用一般现在时来时间状语从句和条件状语从句都使用一般现在时来表示将来时间表示将来时间, 这在英语里被称为这在英语里被称为“主将从现主将从现”。主句的将来时态并不仅限于我们这一课里所学习到主句的将来时态并不仅限于我们这一课里所学习到的的will动词原形构成的一般将来时动词原形构成的一般将来
4、时, 还包括还包括be going to动词原形、动词原形、be doing所表示的一般将来时所表示的一般将来时以及我们以后会学到的其它的将来时态。例如以及我们以后会学到的其它的将来时态。例如:What is he going to do when he grows up? 他长大了想干什么？他长大了想干什么？We are leaving for Amoy tomorrow if it doesnt rain. 如果明天不下雨如果明天不下雨, 我们就去厦门。我们就去厦门。We will buy that microwave next week if its price keeps going
5、down. 如果价格持续下降如果价格持续下降, 下个礼拜我们就买那台微波炉。下个礼拜我们就买那台微波炉。If +, Ill / youll + 条件条件结果结果For example: If you study, Ill be happy. wear jeans to school , youll be sorry. get up late, youll be late. eat too much, youll be fat. wash your clothes yourself 1. Structure这里这里if所引导的是真实条件句所引导的是真实条件句(real conditional),
6、 即所即所假设的条件有可能成为现实假设的条件有可能成为现实, 表达假定所假设的条件表达假定所假设的条件实现时会出现的情况或会采取的行为。有时实现时会出现的情况或会采取的行为。有时, 我们我们可以使用可以使用并列结构的祈使句并列结构的祈使句来表达这种类型的条件句。来表达这种类型的条件句。e.g. If you set your alarm clock, you wont oversleep. 如果你上闹钟如果你上闹钟, 你就不会睡过头了。你就不会睡过头了。 Set your alarm clock, and you wont oversleep.If you give him an inch,
7、he will take a mile. 他会得寸进尺。他会得寸进尺。 Give him an inch, and he will take a mile.If you dont give him some food, he will starve. 如果你不给他一点吃的如果你不给他一点吃的, 他就会饿死。他就会饿死。 Give him some food, or/else he will starve.(1)条件状语从句通常由连词条件状语从句通常由连词if引导引导, 意为意为“如果、假如如果、假如”, 主句不能用主句不能用be going to表示将来表示将来, 而应该用而应该用shall、
8、will。e.g. If you leave now, you are never going to regret it. (错误错误) If you leave now, you will never regret it. (正确正确)(2) if “如果如果”, 引导条件状语从句引导条件状语从句, 主句用一般将来时，主句用一般将来时， 从句则用一般现在时，从句则用一般现在时，如：如：If it rains tomorrow, I shant climb the hills.2. 用法用法注意注意: 宾语从句中的宾语从句中的if与条件状语从句与条件状语从句if的区别。的区别。宾语从句中的宾语
9、从句中的if “是否是否”相当于相当于whether, 引导引导宾语从句宾语从句, 时态需根据语境确定。时态需根据语境确定。I dont know if it will rain tomorrow. 我不知道明天是否会下雨。我不知道明天是否会下雨。在阅读英文文章时在阅读英文文章时, 我们有可能看到这样的句子：我们有可能看到这样的句子：If my father will give me permission, I shall spend a few months abroad. 如果我父亲同意如果我父亲同意, 我将在国外待几个月。我将在国外待几个月。If you will take the tr
10、ouble to read his letter carefully, you will see what he means. 如果你肯花一些时间来认真读他的信，你就会明白如果你肯花一些时间来认真读他的信，你就会明白他是什么意思了。他是什么意思了。在在if-分句中中用分句中中用“will动词原形动词原形”并不单纯表示将来意义，并不单纯表示将来意义，这里的这里的will是个表示是个表示“意愿意愿”的情态动词的情态动词, 相当于相当于be willing to(愿意愿意)。要注意这种带要注意这种带“will动词原形动词原形”的的if-分句在某些场合分句在某些场合是不可以随便用的是不可以随便用的,
11、比如我们可以说：比如我们可以说：If he gets my letter in time, hell be able to change his plans. 如果他及时收到我的信如果他及时收到我的信, 他就能改变他的计划。他就能改变他的计划。却不可以说成：却不可以说成：If he will get my letter in time, hell be able to change his plans.另外另外, 在在if-分句分句中还可能使用中还可能使用“would动词原形动词原形”的结构，的结构，这种用法还是表示这种用法还是表示“意愿意愿”, 常用于表示客气的请求常用于表示客气的请求, 这
12、时这时主句动词既可以用主句动词既可以用will/ shall动词原形动词原形, 也可以用也可以用would/ should/ could/ might动词原形。如：动词原形。如：If you would try Italian food, you would like it. 如果你愿意尝尝意大利食物如果你愿意尝尝意大利食物, 你会喜欢它的。你会喜欢它的。If you would reserve the seats, we would be sure of a comfortable journey. 如果你愿意订座如果你愿意订座, 我们将肯定会有一个舒适的旅程。我们将肯定会有一个舒适的旅程。
13、1.如果你不赶快走如果你不赶快走, 你就会迟到。你就会迟到。2 .如果你爱你的父母如果你爱你的父母, 你应当帮他们做做家务。你应当帮他们做做家务。3. 如果你更友善一些如果你更友善一些, 你会教上很多好朋友。你会教上很多好朋友。Exercise If you dont go soon, youll be late.You should help do the housework if you love your parents.You will make lots of friends if you are more friendly.4.如果你带外校的朋友来如果你带外校的朋友来, 老师会让他
14、们离开。老师会让他们离开。5. 如果你不完成作业如果你不完成作业, 妈妈不会让你玩电游。妈妈不会让你玩电游。6. 当你看到当你看到Bill Gates, 你会对他说些什么？你会对他说些什么？If you bring friends from other schools, the teacher will ask them to leave.If you dont finish your homework, your mother wont let you play computer games.What will you say to Bill Gates when you see him?F
15、or more exercises, click here.1. bedoing形式形式: 用现在进行时态表达将来，用现在进行时态表达将来，主要意义是表示按计划、安排即将发生的动作，主要意义是表示按计划、安排即将发生的动作，常用于位置转移的动词常用于位置转移的动词, 如如go、come、leave，start、arrive等等, 也可用于其它动态动词。如：也可用于其它动态动词。如：The president is coming to the UN this week. 总统这周将到联合国来。总统这周将到联合国来。We are moving to a different hotel the da
16、y after tomorrow. 我们后天将换一家宾馆。我们后天将换一家宾馆。Explanation 在现在英语中在现在英语中, 有相当多的动态动词都可以用有相当多的动态动词都可以用现在进行时表示将来。现在进行时表示将来。例如：例如：Dinner is ready. Were having fish for dinner. 晚饭好了晚饭好了, 今晚我们吃鱼。今晚我们吃鱼。Im spending my holidays in Singapore this year. 今年我要去新加坡度假。今年我要去新加坡度假。Tom isnt finishing his high school until n
17、ext year. 汤姆明年才高中毕业。汤姆明年才高中毕业。advice意意为“劝告；建告；建议”是是不可数名不可数名词，不能，不能说a advice, 而是而是a piece of advice,也因也因为advice是不可是不可数名数名词。“两个（两个（则）建）建议”，我，我们通常通常说two pieces of advice。注意。注意piece要采用复数，要采用复数，advice不可数，但不可数，但piece可数。我可数。我们也可以也可以说为some pieces of advice一些建一些建议。如：如：Can you give me some advice?你能你能给我一些建我一些
18、建议吗？2. Can you give me some advice please?与与advice有关的一些有关的一些词组：ask advice of 向向.征求意征求意见, 请教教 by sb.s advice 依某人依某人劝告告 on sb.s advice 依某人依某人劝告告 follow sb.s advice 接受某人意接受某人意见 give advice 劝告告, 忠告忠告Dear Su Mei,I dont _ (know) what to _ (do) about going to Mikes birthday party tomorrow night. My parents
19、 _(think) I should study for my English exam next week. If I_(go) to the party, they _(be) upset. Mike _(tell) us wear nice clothes, but I dont _(have) any. If I_(wear) jeans, I _(look) the worst. Also, Im not sure how to _(go) to the party. If I _(walk), it _ (take) me too long. If I _ (take) a tax
20、i, it _ (be) too expensive. Can you give me some advice please?3a Fill in the blanks with the correct forms of the verbs in brackets.knowdothinkgowill betellshavewearwill lookgowalkwill take takewill be3b Complete the sentences using your own ideas.1.If I get up late tomorrow,_ 2.If I dont finish my
21、 homework, _ 3.If I dont get enough exercise, _ 4.I will not have enough time to study if_ 5.I will not make any friends if _ I will miss the school busmy teacher will be angryI wont be strongI play computer games all the day.I always make them upset.Exercise1.Complete the sentence. Use the phrases
22、from the box.1. Dont talk in class. If you do, the teacher _.2. Dont watch TV tonight. If you do, you _.will be late, will laugh at you, will never stop talking, wont study for your test, will tell you to stopwill tell you to stopwont study for your test4. Dont walk too slowly. If you do, you _.5. D
23、ont wear jeans to dance. If you do, people _.6. Dont ask about her children. If you do, she _.will laugh at youwill never stop talkingwill be late1. What _ (happen), if we climb the tree.2. Could you help me _ (organize) the party games?3. If it _ (rain) tomorrow. We _ (not go) hiking.4. If you wear
24、 jeans to the party, the teachers _ (be) angry.5. Dont _ (bring) food to school.6. We are going to _ (ride) bikes to school.2. 用所给词的正确形式填空。用所给词的正确形式填空。will happenorganizerainswont gowill bebringride Because if it wont rain, my little son will come, too. Ill go to the party. And I think if I will giv
25、e you a Dear Jenny, Thanks for inviting me to the party. Of course present, you are happy. I hope it wont rain that day. If he comes, you arent disappointed, he is really funny. OK, see you on the party.Yours, will bedoesntgivewont beRose3. 阅读下面短文把文中出现的语法错误改正过来阅读下面短文把文中出现的语法错误改正过来。1.Write five sentences with if structure.2.Copy the sentences on PPT3 and translate them. Homework
