If-引的条件状语从句.doc

If 引导的条件状语从句 If 引导的条件状语从句遵循主过从过、主将从现的原则。 主将从现（主情从现、主祈从现） If it rains tomorrow,I won’t climb the hills. If it doesn’t rain tomorrow,I will go to the countryside with my friends. If 引导的条件状语从句 If 引导的条件状语从句遵循主过从过、主将从现的原则。 主将从现（主情从现、主祈从现） If you will help me,Ill finish it on time. We may go out if its fine tomorrow. If you finish your homework,you can watch TV. Please call me if you go shopping next Sunday. If I go there，Ill take her some flowers. Well stay at home if it rains tomorrow. Please call me if he’s at home. If you work harder,you’ll pass the exam. She will visit her grandpa if she has time tomorrow. We’ll take a taxi to the city if the train doesn’t arrive on time. The teacher will be angry if he is late. If引导的条件状语从句与unless引导的条件状语从句的转换 If+否定形式=unless+肯定形式 You won’t pass the exam if you don’t work hard. =You won’t pass the exam unless you work hard. If you don’t go to bed earlier,you will feel tired in the morning. =Unless you go to bed earlier,you will feel tired in the morning. If it doesn’t rain,he will play with me tomorrow. =Unless it rains,he will play with me tomorrow. If she doesn’t come,I’ll go shopping alone =Unless she comes,I’ll go shopping alone. if条件状语从句与祈使句,and/or＋一般将来时的句子转化 If you get up early,you’ll get there on time. =Get up early,and you’ll get there on time. =Get up early,or you won’t get there on time. If you get up early，you wont be late for school. =Get up early，and you wont be late for school. =Get up early，or you will be late for school. If you don’t get up early,you won’t catch up with the early bus. =Get up early,and you will catch up with the early bus. =Get up early,or you won’t catch up with the early bus. if条件状语从句与without的句子转化 If there is no water,we cant live. =We cant live without water. If there is no water,fish will die. =Fish will die without water. If you help me,I’ll finish the work soon. =With your help,I finish the work soon. if条件状语从句与祈使句,and/or＋一般将来时的句子转化 If you get up early,you’ll get there on time. =Get up early,and y