内容正文:
Module 4 New technology
Unit 3
Language in use
Language practice:
1. If you want to turn on the recorder, press the blue button.
2. If you like great music, please welcome Sally Maxwell !
3. If the red light doesn’t come on, wait for thirty seconds.
4. If there’s no green light, choose the “copy” symbol.
Lead in
Write instructions for how to do one of the following:
Making and sending an e-card
Finding out about new information
Using a mobile phone
if表示“如果”、“假如”引导条件状语从句。如果从句谈论的是一个有可能发生的事实及其产生的相关的结果,主句用一般将来时态,从句用一般现在时态。例如:
We can walk there if we can’t find a bus .
If it rains tomorrow ,we will not go to the zoo.
What will you do if you find a panda in danger?
Presentation
条件状语从句和主句还有一个共同的伙伴,有时它可以替代从句和主句,它就是“祈使句+and/or+简单句”。其中and表示句意顺承;or则表示转折,意为“否则”。例如:
If you work harder, you’ll pass the exam.
= Work harder, and you’ll pass the exam.
如果你再努力些,你就会通过考试。
If you don’t hurry up, you’ll miss the train.
= Hurry up, or you’ll miss the train.
如果不快点儿,你就赶不上火车了。
在学习条件状语从句时,要注意以下几点