by busy with sth./in doing sth.

be occupied with sth./in doing sth.

be employed in doing sth. take control of 控制

take charge of 管理

take notice of 注意 　　

背教材原句 记句式结构 仿写促落实 1.That is why English has so many difficult rules that confuse people.

那就是英语有如此多令人困惑不解的规则的原因。 that is why..."那就是......的原因"，why引导表语从句。 I always try to overcome difficulties.That is why I have always succeeded where others have failed.

我总是努力克服困难，那就是我总是在别人失败的事情上成功的原因。 2.Even though the Normans spoke French for the entire 250 years they ruled England，French did not replace English as the first language.

尽管诺曼人在统治英格兰的整整250年间一直讲法语，但是法语并没有取代英语成为第一语言。 even though/if引导让步状语从句，意为"尽管，即使"。 He's the best teacher，even if/though he has the least experience.

他虽然经验最少，却是最出色的老师。 3.After the Norman Conquest，high­class people spoke French while common people spoke English.

诺曼征服之后，上层社会的人讲法语，而普通人则讲英语。 while引导并列句，表示前后对比，意为"而；却"。 Nodding the head means agreement, while shaking it means disagreement.

点头表示同意，而摇头表示不同意。