高三英语一句语法填空,句子有点难分析In Dauphin Island,approximately 90 miles to the east of the point19the hurricane made landfall(山崩),the sand that comprised the barrier island20(transport) across the island into the Mississippi

高三英语一句语法填空,句子有点难分析In Dauphin Island,approximately 90 miles to the east of the point19the hurricane made landfall(山崩),the sand that comprised the barrier island20(transport) across the island into the Mississippi
高三英语一句语法填空,句子有点难分析
In Dauphin Island,approximately 90 miles to the east of the point19the hurricane made landfall(山崩),the sand that comprised the barrier island20(transport) across the island into the Mississippi Sound(海峡),21（push）the island towards land.最好帮我解释为什么那样填,特别要告诉我哪个句子是并列句还是从句哦,

高三英语一句语法填空,句子有点难分析In Dauphin Island,approximately 90 miles to the east of the point19the hurricane made landfall(山崩),the sand that comprised the barrier island20(transport) across the island into the Mississippi
1、引导定语从句时,关系副词when,where,why的含义相当于"介词+ which"结构,常常和"介词+ which"结构交替使用.19应该是where.
2、整个句子简介来看,为：the sand （transport） across the island.20为整个句子的谓语结构,根据主语the sand,谓语为is transported.
3、句子已经有一个谓语成分,故push短语只能是一个非谓语成分的状语从句.21应为pushing.
翻译：在多芬岛,该岛位于台风造成山崩之处大约90里的东方,构成堰洲岛（即多芬岛,此处是地理学名称）的沙子被人们经由密西西比海峡、穿过岛屿运往陆地.

句子读不通

如果我理解没错的话，19处没有提示所填词语，20和21分别用括号里的词？
19. where
20. transports
21 pushing
在多芬岛，在hurricane made landfall的那个地方向东大概90 miles，形成了barrier island的沙子，从岛运输到Mississippi Sound，把岛屿往陆地推进。
the po...

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如果我理解没错的话，19处没有提示所填词语，20和21分别用括号里的词？
19. where
20. transports
21 pushing
在多芬岛，在hurricane made landfall的那个地方向东大概90 miles，形成了barrier island的沙子，从岛运输到Mississippi Sound，把岛屿往陆地推进。
the point是先行词，后面 hurricane made landfall修饰它，叫做什么从句我忘了，好像是定语从句。
transports的主语是the sand，用单数。
push和transport不并列，因为如果并列要用and连接，所以只能加ing了。

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解答如下：
19填where 引导定语从句 修饰point( where the hurricane made landfall(山崩)，
In Dauphin Island，approximately 90 miles to the east of the point( where)the hurricane made landfall(山崩)，作句子状语
20填 wa...

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解答如下：
19填where 引导定语从句 修饰point( where the hurricane made landfall(山崩)，
In Dauphin Island，approximately 90 miles to the east of the point( where)the hurricane made landfall(山崩)，作句子状语
20填 was transported 是句子谓语 被动语态，其主语是sand
the sand主语（ that ... island）（定语从句修饰sand）(was transported) （谓语）
21填 pushing 分词短语作伴随状语

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