2019学年度北师大版选修七Unit 20 Section Ⅷ Grammar学案设计

　　单元语法项目(一)--将来完成时和将来进行时

　　语法图解

　　探究发现

　　①By the year 2030, development in biochemistry and medical science will have made it theoretically possible for us to live for at least 150 years.

　　②At nine o'clock on Saturday morning, I'll be sitting in the front row and listening to the great Professor Willard talking about the future of my brain.

　　③By the year 2015, the clothing industry will have produced new types of material that will remain stainless no matter what you spill on them.

　　④We will be linking our brains to these computers and a huge database.

　　[我的发现]

　　(1)句①和句③为将来完成时，其基本结构为：will/shall_have＋过去分词，表示将来某个特定时间之前完成的动作。

　　(2)句②和句④为将来进行时，其基本结构为：will/shall_be＋现在分词，表示将来某个特定时间正在进行的动作。

　　一、将来完成时

　　1．构成形式：shall/will have done sth.

　　2．用法：将来完成时表示未来的某个日期或某个动作之前将要完成的动作，也可用来表示一种假设。常与"before＋将来时间"或"by＋将来时间"连用，也可与before, by the time或when引导的从句(从句用一般现在时)连用。

I shall have finished this composition before 9 o'clock.