Period Ⅳ Using LanguageⅠ.单词巩固1．n.________收入________恐龙________县；郡________事件；事变________灰尘；尘土；尘埃________结局；结尾2．v.________成功；接替；继任________雇用；利用(时间、精力等)_________损害；危害________咬；叮；刺痛________检查；视察3．adj.________安全的；可靠的________凶猛的；猛烈的Ⅱ.短语回顾1．________________形成；产生2．________________按照；根据……所说3．________________以致于；结果Ⅰ.课文理解(Ⅰ)根据课文内容，判断正(T)、误(F)1．Most animals have died out during the long history of the earth.( )2．Dinosaurs are the most famous of the animals that have disappeared.( )3．There used to be many different kinds of dinosaurs on the earth.( )4．A rare species of bird－like dinosaur could both run and climb trees.( )5．Now people know the reason why dinosaurs suddenly disappeared.( )(Ⅱ)根据课文内容，回答下列问题1．When did dinosaurs live on earth?________________________________________________________________________2．When did dinosaurs die out?________________________________________________________________________3．How did dinosaurs die out?________________________________________________________________________4．Where was bird－like dinosaur discovered?________________________________________________________________________5．When did dodo die out?________________________________________________________________________Ⅱ.考点精析1．They lived on the earth tens of millions of years ago，long before humans came into being...千百万年前，它们(恐龙)就在地球上生活，比人类的出现要早得多……[归纳]long before 可单独作状语，意为“很久以前；很早”，此时 before 为副词。long before 构成的常用句型为 It be long before＋从句和 It be not long before＋从句，前者意为“过很久才……”，强调经历的时间长；后者意为“不久就……”，强调经历的时间短。[运用](1)It ______________ we meet again.我们要过很久才能再见面。(2)It __________________ we mee...
