Memory【学习目标】1. 掌握unless引导的条件状语从句的用法2. 掌握unless引导的条件状语从句与if.not结构之间的转换【重难点预测】重点：掌握unless引导的条件状语从句的用法难点：掌握unless引导的条件状语从句与if.not结构之间的转换【学习流程】.自主探究unless与if.not的意思一样 If you do not get enough sleep every night,you will not remember things well.= Unless you get enough sleep every night,you will not remember things well.unless意为“除非”,if.not(如果.不.)的意思接近，且两个结构通常可互换使用。如:If you do not work hard,you will not succeed.(如果你不努力工作，你就不会成功。)= Unless you work hard, you will not succeed.(除非你努力工作，否则你不会成功。).实践演练1. If we dont invite him,Jack wont come to the party. = _2. If you dont brush your teeth every day,you will get a toothache. = _3.B1与A1的题型相同,呈现了主句和从句，要求同学将主句和从句配对,口头互换句子结构.合作交流1.在unless引导的从句里，通常用现在时表将来。2.我们把if引导的从句和unless引导的从句放在主句后面。 if you do not leave now.You will be late for school + unless you leave now.、知识梳理练习B2呈现了含有if.not结构的句子，要求同学将这些句子改写成含有unless从句的句子，并分别用从句在前和在后两种形式书写1.If you do not improve your handwriting,you will lose marks in the exam.Unless you improve your handwriting,you will lose marks in the exam.You you will lose marks in the exam unless you improve your handwriting.2. .、课堂检测-把句子分别改写成含有unless从句在前和在后的两种形式1. I will not attend the party if he doesnt invite me._、师（生）总结反思: 收获策略、反思纠错与归纳