Unit 5 Understanding ideas课文知识点背默 2025-2026学年外研版英语八年级下册

U5课文知识点详解： Imagine（想象 +doing） a dinosaur in an ancient forest. It is running（现在进行时） around, looking for寻找 its next meal. With（介词，伴随） an angry cry, it opens its mouth, raises（抬起） its beautiful feather-covered（羽毛覆盖的） arms, and... Wait, feathers on a dinosaur? For hundreds of years, people believed(动词，认为） that dinosaurs looked like (看起来像）huge lizards（蜥蜴）. Just look at all those dinosaurs in books, films and TV shows! However, thanks to（多亏） a piece of amber（一块琥珀）, scientists now know that this idea is wrong.In the amber from Southeast Asia, they found （发现）the tail of （...的尾巴）a dinosaur - with feathers. These beautiful golden stones（金色的石头）quietly keep pieces of the past（保存着过去的碎片）. They can tell us whether （是否）dinosaurs had feathers, but that's not all. They also help us understand that life on earth（地球上的生命） has always changed（现在完成时）. A piece of amber from Northern Europe, for example（例如）, holds a flower.This species no longer（不再） grows（动词成长，名词growth） in this area（地区）. But the find（动词发现，名词为finding） proves（证实）that it did 35 million years ago. In the future（在未来）, amber may（情态动词+V.原） also help （help sb. do）us discover（动词发现 名词discovery） if other species have changed over time（随着时间）. Thanks to amber, more than(超过） 300 unknown species have been discovered（现在完成时的被动语态）. In a piece of amber from Africa, scientists found 13 ants. Research shows that they are a completely（完全地） new species.Scientists used to （过去常常）believe that ants came from the northern half of the earth. The discovery of（....的发现） this African species has changed old beliefs (陈旧的观念）about the history of ants. Who knows whether this piece of amber will tell us more secrets（秘密）? As a window on the past, amber has been much studied（study ，研究）. However, it's still not fully （完全地）understood（原形understand，名词understanding 理解）. We should put more effort (投入更多的精力）into research(研究）. Then we can use this key（钥匙） to unlock （揭开 lock 名词锁）more secrets of nature. U5课文知识点背默： Imagine（词义： 后加： ） a （恐龙） in an ancient forest. It is running（时态： ） around, （寻找） its next meal. With（词性; ，词义： ） an angry cry, it opens its mouth, （抬起） its beautiful （羽毛覆盖的） arms, and... Wait, feathers on a dinosaur? For hundreds of years, people believed(词性： ，词义： ） that dinosaurs looked like ( ）huge （蜥蜴）. Just look at all those dinosaurs in books, films and TV shows! However, thanks to（ ） a piece of amber（ ）, scientists now know that this idea is wrong.In the amber from Southeast Asia, they （find）the tail of （ ）a dinosaur - with feathers. These beautiful golden stones（ ）quietly keep pieces of the past（ ）. They can tell us （选择：whether/that）dinosaurs had feathers, but that's not all. They also help us understand that life on earth（ ） has always changed（时态： ）. A piece of amber from Northern Europe, （例如）, holds a flower.This species （不再） grows（词性： ，名词 ） in this area（ ）. But the find（名词为： ） proves（ ）that it did 35 million years ago. 在未来）, amber may（词性： 后加： ） also help （help sb. + 帮助某人做某事）us （动词发现 名词为 ） if other species have changed over time（ ）. Thanks to amber, more than( ） 300 unknown species have been discovered（时态; ）. In a piece of amber from Africa, scientists found 13 ants. Research shows that they are a （完全地） new species.Scientists （过去常常）believe that ants came from the northern half of the earth. The （discover）ofthis African species has changed old （believe） (陈旧的 ）about the history of ants. Who knows whether this piece of amber will tell us more （秘密）? As a window on the past, amber has been much studied. However, it's still not （完全地）understood（原形 ，名词 ）. We should put more effort (投入更多的 ）into research( ）. Then we can use this key（ ） to （lock）more secrets of nature. 学科网（北京）股份有限公司 $