【学与练】每天一句,入门到专业.It cuts a clean cylinder of rock, from which …

英语框架2019-05-27 04:45:33

It cuts a clean cylinder of rock, from which can be seen the strata the drill has been cutting through.

它切割一段光滑的圆柱形岩石,从中能看出钻头所钻透的地层。

单词学习

◆cylinder [ˈsɪlɪndə(r)] n. 圆柱;圆筒;气缸

◆cy+lin+der  相当于中文三个字的拼音

◆strata [ˈstrɑ:tə] n. 地层;社会阶层

◆stra+ta 相当于中文两个字的拼音


语法学习

◆主句:It cuts a clean cylinder of rock

◆从句:from which can be seen the strata

◆从句:(that) the drill has been cutting through


配套练习

◆cuts为什么要加s?

◆has been cutting是什么时态?

◆which等于哪个单词;引导什么从句?

◆引导词that再哪两种情况下可以省略?

◆from which can be seen the strata的主语是?

◆按照主谓宾顺序,重新排列这两个从句?

◆定语从句共有几种难度等级?新版书184页

◆翻译:这个充满气的气缸已经被人买下了。


教学视频(讲解练习、发音和语法细节)