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.... ... ...关键词：Everyone will study at home PPT课件免费下载，Life in the future PPT下载，.PPTX格式； 本作品中主体文字及图片可替换修改，文字修改可直接点击文本框进行编辑，图片更改可选中图片后单击鼠标右键选择更换图片，也可根据自身需求增加和删除作品中的内容，源文件无水印。如认为该内容涉嫌侵权，可通过邮件提出书面通知，我们将及时处理。