Unit 5.3 Using language&Grammar-【创新教程】2025-2026学年高中英语选择性必修第一册五维课堂同步Word教案（外研版2019）
Section Ⅲ Using language & Grammar
[词汇精讲]
1.The extinction of the Pinta Island tortoise is blamed on humans.
平塔岛龟的灭绝应归因于人类。
*blame v．责怪，指责；把……归咎于
◆[佳句感知]
She doesn't blame anyone for her father's death.她没把她父亲的死归罪于任何人。
[知识积累]
(1)blame sb. for sth./doing sth. 为某事责备某人/责备某人做了某事
blame sth. on sb. 把某事归咎于某人
be to blame (for...) 某人应该被谴责；应负责任(表示被动)
(2)put /lay the blame for sth. on sb. 把某事归咎于某人
accept /bear/take the blame for sth. 对某事负责任
◆[学以致用]
(1)单句语法填空
①The police blamed the traffic accident on Jack's careless driving.
②Officials believe that more than one person may be to blame for the fire .
③If he fails his exams，he'll only have himself to blame (blame)．
(2)完成句子
④You can't expect Terry to take all the blame .
你不能指望特里承担所有的责任。
⑤It's no use trying to put the blame on other people.
把责任推到别人身上是没有用的。
2.After goats in particular had been brought to the island，the Pinta Island tortoise population declined.
特别是山羊被带到岛上之后，平塔岛龟的数量下降了。
*decline v．减少
◆[佳句感知]
The number of staff has declined from 217,000 to 114,000.
员工人数已从 217 000 人减少到 114 000 人。
[知识积累]
(1)decline by... 下降了……
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decline to... 下降到……
decline in... 在……方面减少/降低
(2)decline v. 降低；拒绝，谢绝
decline an offer/invitation
拒绝工作机会邀请
decline to do sth. 拒绝去做某事
(3)decline n. 减少；衰落
a decline in... 在……方面减少/降低
in decline/on the decline 在下降低
fall/go into decline 开始衰落/下降
◆[学以致用]
(1)单句语法填空
①There has been a decline in the size of families.
②Since the beginning of 2019，the price of worldwide milk products has declined by 3.8%.
③There's a widely held belief that educational standards are in decline.
(2)完成句子
④The port fell into decline in the 1950s.
港口在20世纪50年代开始衰落了。
⑤The court declined to look into her case again.
法院拒绝再次调查她的案件。
⑥Mary declined my invitation to dinner.
玛丽拒绝了我的晚餐邀请。
3.Look at the pictures of the species native to different regions of China.
看这些图片，这些物种原产于中国的不同地区。
*be native to 源于……的，原产于……
◆[佳句感知]
As is known to us all，pandas are native to west China.
众所周知，熊猫原产于中国西部。
[知识积累]
a native of 是……本地人，是……本地动/植物
native language/tongue
本国语，本地语，母语
go native 入乡随俗(幽默用法)
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◆[学以致用]
(1)单句语法填空
①These kinds of fish are native to North America.
②He has become a native of Glasgow.
③The bear was once a native of Britain.
(2)完成句子
④They have never seen their native land since they left it .
他们再也没有看到他们的祖国了。
⑤English is not the native language for almost half of our overseas visitors.
对于几乎一半的海外游客来说，英语不是母语。
⑥Austen has been living in New Guinea so long that he has gone native .
奥斯丁在新几内亚生活了这么久，他已经入乡随俗了。
过去完成时
自我探究 | 总结归纳 |
①What's more，he had recently received a letter from his father predicting that... | 句子①中的谓语为had received，其时态为过去完成时。 |
②After Darwin had spent some time in South America, his room on the ship was crowded with samples of the plants and animals he had collected. | 句子②中after引导的时间状语从句中的谓语为had spent，其时态为过去完成时；主句的谓语为was crowded，其时态为一般过去时；主句中所含的定语从句中的谓语为had collected，其时态为过去完成时。 |
③At that time, people believed that all species had appeared on Earth at the same time... | 句子③中主句的谓语为believed，其时态为一般过去时；宾语从句中的谓语为had appeared，其时态为过去完成时。 |
④It seemed their beaks had evolved according to what food was available on that particular island. | 句子③中主句的谓语为seemed，其时态为一般过去时；其后所跟的从句中的谓语为had evolved，其时态为过去完成时。 |
[语法精析]
◆[基本用法]
过去完成时的动作需在过去某一时间之前发生，即发生在“过去的过去”。
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