外研版九年级英语上册《Language in use》Wonders of the world PPT课件下载，共43页。Learning goals通过本课的学习，学生能够：①总结和练习if从句。②学习描述一个问题并给出相应的建议。③能够为一份杂志写问题页。Language practiceLook at these sentences, which sentences have a comma(逗号) in the middle and which doesn’t?If I start after dinner, I’ll finish it before I go to bed.If you do all these other things instead of your homework, you won’t have time to study.He thinks something will go wrong if I play games on it.一、条件状语从句If I start after dinner, I’ll finish it before I go to bed.翻译：如果我在晚饭后开始，我将在我睡觉前完成它。If you do all these other things instead of your homework, you won’t have time to study.翻译：如果你老是做与学习无关的事情，那么你就没有时间学习。He thinks something will go wrong if I play games on it.翻译：爸爸觉得如果我在电脑上玩游戏的话，电脑就会出毛病。1. 用法:如果 if 引导的从句表示某种假设的情况，主句则表示此种情况所导致的结果。2. 主句与从句时态的问题:(1)“主将从现”if 引导的条件状语从句，若主句用一般将来时，从句用一般现在时。e.g. If he runs, he’ll get there in time.如果他跑步去，他就会及时赶到那儿。(2)“主情从现”if 引导的条件状语从句，若主句中有情态动词时，从句用一般现在时表示将来。e.g. If it stops snowing, we can go out.如果雪停了，我们就可以出去。(3)“主祈从现”if 引导的条件状语从句，若主句是祈使句，从句用一般现在时。e.g. If you have an exam, be careful.如果你要考试，要仔细。Rewrite the sentences with if.Listen in class, or you will not understand what to do.If you do not listen in class, you will not understand what to do.1.Eat your breakfast, or you will get hungry at school.If you don’t eat your breakfast, you will get hungry at school.2.Hurry up! You will be late.If you don’t hurry up, you will be late.3.Read the book carefully. Then you will not make mistakes.If you read the book carefully, you will not make mistakes.4.Don’t watch too much TV, or your eyes will hurt.If you watch too much TV, your eyes will hurt.5.Work harder! You will get higher marks.If you work harder, you will get higher marks.Summary1.Grammar:①总结和练习if从句；②学习描述一个问题并给出相应的建议；2. 介绍了起源于18世纪西方报纸或杂志为人排忧解惑的栏目——建议专栏实践与拓展将自己在学习或生活中遇到的问题写在纸条上，然后放在我们的百宝箱，随机抽取，然后大家一起想办法帮助解决问题。... ... ...关键词：Language in use PPT课件免费下载，Wonders of the world PPT下载，.PPTX格式； 本作品中主体文字及图片可替换修改，文字修改可直接点击文本框进行编辑，图片更改可选中图片后单击鼠标右键选择更换图片，也可根据自身需求增加和删除作品中的内容，源文件无水印。如认为该内容涉嫌侵权，可通过邮件提出书面通知，我们将及时处理。