内容正文:
八年级英语(上)
Unit10 If you go to the party, you’ll have a great time!
if引导的条件状语从句
条件状语从句是在复合句中作条件状语的句子。表示假如有从句的动作发生就会有主句的动作发生。条件状语从句常由连词if引导。
1.if条件状语从句的位置
在 if 引导的条件状语从句中,if 条件句位置比较灵活,可放在主句前面也可放在主句后面。若放在主句前,从句后面要用逗号和主句隔开。如:
If he doesn't feel tired,he will visit the museum.=He will visit the museum if he doesn't feel tired.如果他不感觉累,他就去参观博物馆。
2.if引导的条件状语从句的时态
在一般情况下,如果主句表示将来的意义,从句用一般现在时表将来。常见的有以下几种:
【主将从现】
☞ You will be late for school if you get up late. 如果你起晚了,上学将会迟到。
☞ If it rains tomorrow, we won’t go to the Great Wall. 如果明天下雨,我们就不去长城。
【主情从现】
☞ If I finish my homework, I can watch TV. 如果我完成了家庭作业,就可以看电视。
【主祈从现】
☞ Don’t forget to lock the door if you are the last one to leave. 如果你最后一个离开,别忘了锁门。
3.注意事项
1.在if引导的条件状语从句中,当主句是一般将来时态时,一般不使用be going to结构,而要用will。
☞ I’ll help you with your English if I am free tomorrow. 如果明天我有空,我会帮你学英语。
2.在if引导的条件状语从句中不能够使用some,而要用any。
☞ If you have any questions to ask, please come to my office. 如果你有问题要问的话,请到我办公室来。
语篇复习
Jeff: Hey, Ben. For the party next week, _________ we ask people to bring food?
Ben: No, let's ________ food from a restaurant. If we ask people to bring food, they'll just bring potato chips and chocalate because they'll be _______ lazy ______ cook.
Jeff: Ok. For the games, do you think we should give people some small gifts _______ they win?
Ben: I think that's a great idea! If we do that, more people will want to play the games.
Jeff: Yes, the games will be__________ exciting, too.
巩固提高
(一)根据汉语提示,完成下列单词的拼写,使句意明确,语言通顺。
1.What is Michael going to ___________ ( 组织 ) at school?
2.Lincoln studied language and later became a language _________ ( 专家 ).
3.I was very __________ ( 生气的 ) with myself for making so many mistakes.
4.Cindy moved a _________ ( 步 ) closer to her friend when she saw him.
5.Friends should ___________ ( 信任 ) each other.
(二)用括号里所给单词的适当形式填空。
1. If you _______________(not answer) his questions, he’ll be unhappy.
2. What shoul