1.She is going to post the letter now,and she guesses that they will receive it in three days.
2.They are going to do more exerice aiming to be in better health.
3.Are you going to play with knife? You will hurt yourself!
4.I will be very excited if you are going to come.
對(duì)于大學(xué)生來(lái)說(shuō),這簡(jiǎn)直就是送分題~~不好意思，麻煩能用if 連接嗎？就是像if it....，we....這樣的主將從先.....主語(yǔ)將來(lái)式，從句現(xiàn)在式就可以了1. they will receive it in three days if she posts the letter now.2.they will be in better health if they do more exerice.3.you will hurt yourself if you play with knife.4. I will be very excited if you come.