1.If it doesn’t rain tomorrow,we will go hiking.
如果明天不下雨,我們就去遠足.
2.You will get good grades if you study hard.
如果你努力學習,就會取得好成績.
3.I will go to the party unless he goes there too.
我會去參加聚會的,除非他也去.(如果他不去,我就去.)
4.You will be late unless you leave immediately.
如果你不馬上走,你將會遲到的.(=If you don’t leave immediately,you will be late.)
難點提示：用條件狀語從句時要注意時態(tài)的正確使用,當主句是將來時的時候,從句要用一般現在時.
lHe will not leave if it isn’t fine tomorrow.
一般將來時,一般現在時
lThey are going to have a picnic if it doesn’t rain next week.
一般將來時,一般現在時