if 的條件句是主將從現(xiàn)即if引導(dǎo)的從句使用一般現(xiàn)在時(shí)而主句使用一般將來時(shí),但是并非所有的句子但是如此,
1.比如主句也可以用祈使句
eg:if you come here next time,do take your baby with you because i miss him very much
2.有些詞沒有將來時(shí)態(tài),只能用一般現(xiàn)在時(shí)
比如：decide ,want 等詞
eg.if time permits,i want to have my hair cut