她在学校努力学习。

　　She studies English very hard at school.

　　她在学校学习英语很努力。

　　Unfortunately, he missed the train.

　　不幸的是他未赶上火车。

　　He is always late for school.

　　他总是上学迟到。

　　[即时演练1]　画出下列句子中的状语

　　①It sounds very different from_place_to_place.

　　②Full_of_hope,_the local people are working hard to_rebuild_their_hometown.

　　③Having_lived_abroad_for_twenty_years,_the old man returned to his hometown where he was brought up.

　　④I will stay another_five_months.

　　⑤Heated,_water changes into steam.

　　⑥In_spite_of_the_heavy_rain,_they arrived.

　　⑦Always look your homework through before_handing_it_in.

　　二、状语从句

　　(一)状语从句的概念及分类

　　用来修饰谓语动词、其他动词、定语、状语或整个句子的从句叫作状语从句。可分为时间、条件、原因、让步、比较等状语从句。

　　(二)各种状语从句的具体用法

　　1．时间状语从句

　　时间状语从句常由以下引导词引导：when; while; as; before; after; since; until; as soon as; no sooner ...than ...; hardly ...when; the moment; every time; immediately等。

　　A．when, while, as引导的时间状语从句

　　(1)when表示时间点时，从句中用短暂性动词；表示时间段时，用延续性动词。

　　You had already gone when I arrived there.

　　当我到达时，你已经走了。(when表示点时间)

　　When I lived in the countryside, I used to carry some water for him.

　　当时住在农村，我常常为他担水。(when表示段时间)

　　(2)while表示"在......期间"或"在某一段时间里"，它所引导的从句的动作是延续性的，并侧重表示和主句动作的同时发生。

　　Sam went through a magazine while he waited.

　　萨姆一边等着一边翻阅杂志。

(3)as引导的时间状语从句