《Everyone will study at home》Life in the future PPT优质课件

外研版七年级英语下册《Everyone will study at home》Life in the future PPT优质课件，共15页。

In twenty years ’ time, maybe there won ’t be any schools!

“in+一段时间”表示“一段时间之后”，常用于一般将来时。

His father will come back in an hour.

There will be a heavy rain in three days.

—How soon will you be back?

—In a month.

In twenty years ’ time, maybe there won ’t be any schools!

“twenty years ’ ”是名词所有格。名词所有格形式多样。

①单数名词和不以-s结尾的复数名词在词尾直接加 “ ’s ”。

The short woman under the tree is Mary ’s mother.

②以-s结尾的复数名词在词尾只加 “ ’ ” 。

The twins ’ bedroom is big and clean.

③如果一样东西为两人或几人共同所有，则在最后一个名词的词尾加

“ ’s ” ；如果属各自所有时，则在各个名词词尾都加 “ ’s ” 。

This is Jim and Kate ’s house.

Tom ’s and Alice ’s mothers are all teachers.

They can ask their teachers questions by Internet, telephone or email.

by prep. 表示“通过……；靠……方法/方式“。

He makes a living by working as a waiter.

What do you mean by saying that?

by表示“乘（交通工具）”时，后面直接跟表示交通方式的名词。

I will leave for Beijing by air next month.

I often go to school by bus.

Well, I ’m not sure.

sure adj.“确信的；确定的”，在句中做表语。

be sure to do sth. 一定/确信会做或会发生某事

The child is sure to be a teacher.

be sure that + 从句 确信······

We are sure that she is from America.

be sure of/about sb./sth. 对某人（物）有把握

I am sure of his success.

I am not sure about English grammar.