Unit 10 Section A Grammar Focus-3c 课件2023-2024学年人教新目标版英语八年级上册

Unit 10 If you go to the party, you’ll have a great time! Section A Grammar focus-3c 能掌握含if条件状语从句的主从复合句的用法。 掌握重点短语及知识点的用法。 Objectives If I have no homework today, … I’ll go to the party. If it is fine, … I’ll go swimming. Can you find out the rules？ If I..., I'll be... If you ..., you’ll be.... If you do, you’ll have... Grammar Focus I think I'll take the bus to the party. If you do, you'll be late. I think I'll stay at home. If you do, you'll be sorry. What will happen if they have the party today? If they have it today, half the class won't come. Should we ask people to bring food？ If we ask people to bring food, they'll just bring potato chips and chocolate. If 句型 Grammar 1. if 引导的条件状语从句，表示对未来的一种假设，可位于主句之前或之后。在if 引导的条件状语从句中，若主句用一般将来时，从句要用一般现在时表示将来。 She will come if you invite her.如果你请她，她会来的。 2. 在when, as soon as, after, before 等引导的时间状语从句中，如果主句为一般将来时，从句要用一般现在时表示将来。 I will call you as soon as I reach Canada.我一到加拿大就给你打电话。 if引导的条件状语从句 1.if意为“如果”，引导条件状语从句，既可 放在主句前面，也可放在主句之后。若if条 件句放在句首，从句后面要加逗号与主句隔 开。 eg：If you go there,I'll go ,too. 如果你去那，我也会去。 Grammar 2.时态运用 在含有if引导的条件状语从句的主从复合句中，主句有下列情况之一时，从句要用一般现在时表示将来意义（主将从现原则）。 （1）主句是一般将来时。 eg：If he comes,he will bring his violin. 他如果来，就会带来他的小提琴。 （2）主句谓语含有情态动词may/might/can/must/should等。 eg：If we start now,we can finish the work on time.我们如果现在开始，就可以按时完成工作。 （3）主句是祈使句。 eg：Work hard，if you want to get good grades. 你如果想取得好成绩，就要努力学习。 3.句型转换。 （1）借助“祈使句+and/or+句子(一般将来时)” 这一句型来转换。其中，在句意上and表示顺承； or表示转折，意为“否则”。 eg：If you study hard，you'll pass the exam easily. 如果你努力学习，你将很容易通过考试。 =Study hard and you'll pass the exam easily. (2)借助without或with 来转换条件状语从句。 eg：If there is no water，fish will die. =Fish will die without water. 如果没有水，鱼会死。 If you help me,I'll finish the work soon. =With your help,I'll finish the work soon. 如果你帮助我，我将很快完成工作。 3a Fill in the blanks with the correct forms of the verbs in brackets. Dear Su Mei, I don’t _______ (know)