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【篇一】2020年12月大學英語四級語法知識復習
英語四級重點語法知識：地點狀語從句
狀語從句的考點為：
1、非if引導的條件狀語從句，此類句子多用at times，provided，so long as，in case，once等來替代if;
2、由even if/so，now that，for all等引導的讓步狀語從句;
just/hardly...when引導的時間狀語從句;more than，as...as，not so much as，the same as，as much as等引導的比較狀語從句。
3、獨立主格結構多以邏輯主語+分詞的形式出現。
4、情態(tài)動詞多與完成時形式連用。
5、定語從句重點考查介詞+關系代詞(which)和as作為關系代詞。
狀語從句
狀語從句：兩個獨立的句子中間用一些含義不同的連接詞連接;狀語從句用來表達兩個句子之間的邏輯關系;分成原因狀語、條件狀語、結果狀語、時間狀語、地點狀語、讓步狀語、目的狀語、比較狀語、方式狀語等九大類型;
eg：I got up late.
I was late for school.
Because I got up late, I was late for school. (原因狀語從句)
I got up late，so I was late for school. (結果狀語從句)
地點狀語：
地點狀語從句通常由where，wherever，everywhere 引導;
eg：Where I live there are plenty of trees.
Wherever you work, you will gain much valuable experience as long as you are willing to work.
Wherever=no matter where
Everywhere they went, they were warmly received.
Where there is a will, there is a way.
where：不能翻譯成在……地方時，通常翻譯為如果，表示在……條件下;
eg: Where you are confident，you will succeed.
eg：Where previously the bank had concentrated on the big infrastructure projects , such as dams, roads and bridges，it begin to switch to projects which directly improved the basic services of a country.
concentrated on ：集中于……
【篇二】2020年12月大學英語四級語法知識復習
as, which 非限定性定語從句
as 和which在引導非限制性定語從句時，這兩個關系代詞都指主句所表達的整個意思，且在定語從句中都可以作主語和賓語。但不同之處主要有兩點：
(1) as 引導的定語從句可置于句首，而which不可。
(2) as 代表前面的整個主句并在從句中作主語時，從句中的謂語必須是系動詞;若為行為動詞，則從句中的關系代詞只能用which.。
在本題中，prevent由于是行為動詞，所以正確選項應為B。
As 的用法
例1. the same… as;such…as 中的as 是一種固定結構, 和……一樣……。
I have got into the same trouble as he (has).
例2. as可引導非限制性從句，常帶有'正如'。
As we know, smoking is harmful to one's health.
As is know, smoking is harmful to one's health.
As是關系代詞。例1中的as作know的賓語;例2中，它充當從句的主語，謂語動詞know要用被動式。
【篇三】2020年12月大學英語四級語法知識復習
英語四級重點語法知識：方式狀語從句
方式狀語從句通常由as，as if，as though，the way，what引導;
eg：Always do to the others as you would be done by.
When enter rome do as the romans do.
(1)as從句帶有比喻的含義，意思是"正如…"，"就像";
(2)as if/though："仿佛……似的"，"好像……似的";
有時用虛擬語氣，有時不用;
eg：They completely ignore these facts as if (as though) they never existed. (與事實相反，謂語用虛擬語氣。)
He looks as if (as though) he had been hit by lighting.
(與事實相反，謂語用虛擬語氣。)
It looks as if the weather may pick up very soon.
(實現的可能性較大，謂語用陳述語氣。)
(3)the way：可以連接兩個句子，表達就像……一樣;
eg：I should do the job the way my father did.
Many Europeans now apparently view the US. the way many Americans view Mexican as a cheap place to vacation, shop and party.
(4)what：就像，猶如;
eg：Air is to man what/as water is to fish.
句型：A is to B what C is to D.
eg：A1 Gore calls global warming an "inconvenient truth," as if merely recognizing it could put us on a path to a solution.
put sb. on a path to a solution：找到解決的辦法
【篇一】2020年12月大學英語四級語法知識復習
英語四級重點語法知識：地點狀語從句
狀語從句的考點為：
1、非if引導的條件狀語從句，此類句子多用at times，provided，so long as，in case，once等來替代if;
2、由even if/so，now that，for all等引導的讓步狀語從句;
just/hardly...when引導的時間狀語從句;more than，as...as，not so much as，the same as，as much as等引導的比較狀語從句。
3、獨立主格結構多以邏輯主語+分詞的形式出現。
4、情態(tài)動詞多與完成時形式連用。
5、定語從句重點考查介詞+關系代詞(which)和as作為關系代詞。
狀語從句
狀語從句：兩個獨立的句子中間用一些含義不同的連接詞連接;狀語從句用來表達兩個句子之間的邏輯關系;分成原因狀語、條件狀語、結果狀語、時間狀語、地點狀語、讓步狀語、目的狀語、比較狀語、方式狀語等九大類型;
eg：I got up late.
I was late for school.
Because I got up late, I was late for school. (原因狀語從句)
I got up late，so I was late for school. (結果狀語從句)
地點狀語：
地點狀語從句通常由where，wherever，everywhere 引導;
eg：Where I live there are plenty of trees.
Wherever you work, you will gain much valuable experience as long as you are willing to work.
Wherever=no matter where
Everywhere they went, they were warmly received.
Where there is a will, there is a way.
where：不能翻譯成在……地方時，通常翻譯為如果，表示在……條件下;
eg: Where you are confident，you will succeed.
eg：Where previously the bank had concentrated on the big infrastructure projects , such as dams, roads and bridges，it begin to switch to projects which directly improved the basic services of a country.
concentrated on ：集中于……
【篇二】2020年12月大學英語四級語法知識復習
as, which 非限定性定語從句
as 和which在引導非限制性定語從句時，這兩個關系代詞都指主句所表達的整個意思，且在定語從句中都可以作主語和賓語。但不同之處主要有兩點：
(1) as 引導的定語從句可置于句首，而which不可。
(2) as 代表前面的整個主句并在從句中作主語時，從句中的謂語必須是系動詞;若為行為動詞，則從句中的關系代詞只能用which.。
在本題中，prevent由于是行為動詞，所以正確選項應為B。
As 的用法
例1. the same… as;such…as 中的as 是一種固定結構, 和……一樣……。
I have got into the same trouble as he (has).
例2. as可引導非限制性從句，常帶有'正如'。
As we know, smoking is harmful to one's health.
As is know, smoking is harmful to one's health.
As是關系代詞。例1中的as作know的賓語;例2中，它充當從句的主語，謂語動詞know要用被動式。
【篇三】2020年12月大學英語四級語法知識復習
英語四級重點語法知識：方式狀語從句
方式狀語從句通常由as，as if，as though，the way，what引導;
eg：Always do to the others as you would be done by.
When enter rome do as the romans do.
(1)as從句帶有比喻的含義，意思是"正如…"，"就像";
(2)as if/though："仿佛……似的"，"好像……似的";
有時用虛擬語氣，有時不用;
eg：They completely ignore these facts as if (as though) they never existed. (與事實相反，謂語用虛擬語氣。)
He looks as if (as though) he had been hit by lighting.
(與事實相反，謂語用虛擬語氣。)
It looks as if the weather may pick up very soon.
(實現的可能性較大，謂語用陳述語氣。)
(3)the way：可以連接兩個句子，表達就像……一樣;
eg：I should do the job the way my father did.
Many Europeans now apparently view the US. the way many Americans view Mexican as a cheap place to vacation, shop and party.
(4)what：就像，猶如;
eg：Air is to man what/as water is to fish.
句型：A is to B what C is to D.
eg：A1 Gore calls global warming an "inconvenient truth," as if merely recognizing it could put us on a path to a solution.
put sb. on a path to a solution：找到解決的辦法