中國有“書讀百遍,其義自見”的古諺,一直在強調(diào)重復練習的重要性。2021年考試日益臨近,多看書,勤做題是大有裨益的。為您提供了“2021年6月英語四級語法用法辨析3篇”,歡迎閱讀參考!更多相關訊息請關注!

【篇一】2021年6月英語四級語法用法辨析
1. 在系表結(jié)構后接不定式時,不能按漢語意思用“人”作主語,而用形式主語it。
如:
他有必要同我們一走去。
誤:He's necessary to go with us.
正:It's necessary for him to go with us.
正:It's necessary that he (should) go with us.
在以上后接 that 從句的句型中,從句謂語通常要用虛擬語氣。
又如:
It's necessary that he (should) buy a computer.
他有必要買臺電腦。
It's necessary that we (should) ask for her advice.
我們有必要去征求一下她的意見。
2. 表示“對……有必要”,其后可接介詞 to 或 for。
如:
Food is necessary for [to] life.
食物對生命是必要的。
Sleep is necessary to [for] one's health.
睡眠對健康是必不可少的。
當后接不定式的復合結(jié)構時,引導不定式邏輯主語的介詞通常只用for而不用 to。
如:
It's necessary for us learn a foreign language.
我們有必要學習一門外語。
3. 可與 if, when, where, as, whenever, wherever, although等連詞構成省略句(可以看成是其中省略了it is)。
如:
If necessary, ring me at home.
如果必要,可往我家里打電話。
Tell him all about it when necessary.
在必須的時候把一切都告訴他。
Where necessary, improvements will be made.
哪兒需要,就在哪兒改進。
They believed in the application of force wherever necessary.
凡屬必要的地方他們都主張使用武力。
另外,注意習語as necessary(按需要,根據(jù)需要),than necessary(比需要的更)。
如:
We'll be adding more workers as necessary. 我們會按需要增加更多的工人。
I drove ten miles farther than necessary. 我開車開過了10英里。
【篇二】2021年6月英語四級語法用法辨析
1. 與 can, be able to 等連用,表示“擔負得起”某事或某物的費用、損失、后果等,或表示“抽得出”時間等,后面通??山用~、代詞、不定式等(多用于否定句或疑問句)。如:
I can't afford (to buy) a new coat. 我沒錢買件新外衣。
He can't afford the time for it. 他抽不出時間來做此事。
He says he really can't afford to wait another day. 他說他確實一天也不能再等了。
2. 表示“提供”“給予”,其后可以接雙賓語(直接賓語通常為抽象概念),若雙賓語交換位置,要用介詞 to(此時無需連用 can, be able to等)。如:
他的來訪給我們帶來極大的快樂。
正:His visit affords us great pleasure.
正:His visit affords great pleasure to us.
【篇三】2021年6月英語四級語法用法辨析
owever與but 的用法區(qū)別
兩者均可表示轉(zhuǎn)折或?qū)Ρ?,意為“但是”、“可是”、“然而”等,但有區(qū)別:
1. 表示轉(zhuǎn)折時,but 是連詞。如:
He is young but very experienced. 他雖年輕,但經(jīng)驗很豐富。
He has three daughters but no sons. 他有3 個女兒,但沒有兒子。
He likes sports, but his wife likes music. 他喜歡運動,而他妻子則喜歡音樂。
2. however 表示“然而”、“可是”時,有的詞書認為它是連詞,有的詞書認為它是副詞。之所以將其視為副詞,也許是因為像許多副詞一樣不僅能位于句首,而且能位于句中(注意前后使用逗號),甚至句末 (注意其前也用逗號)。如:
Later, however, he changed his mind. 可是他后來改變了主意。
He hasn't arrived. He may, however, come later. 他還沒有到,不過他等會兒可能會來。
He said that it was so; he was mistaken, however. 他說情況如此,可是他錯了。
注:以上各例中的 however 不能換成 but,但可用 but 來改寫。如:
He said that it was so, but he was mistaken. 他說情況如此,可他錯了。
3. 當連接兩個句子時,其前通常應用分號,或另起新句。如:
It's raining hard; however, I think we should go out. / It's raining hard. However, I think we should go out. 雨下得很大,但我想我們還得出去。
注:上例中的 however 不能換成 but,但可用 but 來改寫 (注意所用標點的變化)。如:
It's raining hard, but I think we should go out.

【篇一】2021年6月英語四級語法用法辨析
1. 在系表結(jié)構后接不定式時,不能按漢語意思用“人”作主語,而用形式主語it。
如:
他有必要同我們一走去。
誤:He's necessary to go with us.
正:It's necessary for him to go with us.
正:It's necessary that he (should) go with us.
在以上后接 that 從句的句型中,從句謂語通常要用虛擬語氣。
又如:
It's necessary that he (should) buy a computer.
他有必要買臺電腦。
It's necessary that we (should) ask for her advice.
我們有必要去征求一下她的意見。
2. 表示“對……有必要”,其后可接介詞 to 或 for。
如:
Food is necessary for [to] life.
食物對生命是必要的。
Sleep is necessary to [for] one's health.
睡眠對健康是必不可少的。
當后接不定式的復合結(jié)構時,引導不定式邏輯主語的介詞通常只用for而不用 to。
如:
It's necessary for us learn a foreign language.
我們有必要學習一門外語。
3. 可與 if, when, where, as, whenever, wherever, although等連詞構成省略句(可以看成是其中省略了it is)。
如:
If necessary, ring me at home.
如果必要,可往我家里打電話。
Tell him all about it when necessary.
在必須的時候把一切都告訴他。
Where necessary, improvements will be made.
哪兒需要,就在哪兒改進。
They believed in the application of force wherever necessary.
凡屬必要的地方他們都主張使用武力。
另外,注意習語as necessary(按需要,根據(jù)需要),than necessary(比需要的更)。
如:
We'll be adding more workers as necessary. 我們會按需要增加更多的工人。
I drove ten miles farther than necessary. 我開車開過了10英里。
【篇二】2021年6月英語四級語法用法辨析
1. 與 can, be able to 等連用,表示“擔負得起”某事或某物的費用、損失、后果等,或表示“抽得出”時間等,后面通??山用~、代詞、不定式等(多用于否定句或疑問句)。如:
I can't afford (to buy) a new coat. 我沒錢買件新外衣。
He can't afford the time for it. 他抽不出時間來做此事。
He says he really can't afford to wait another day. 他說他確實一天也不能再等了。
2. 表示“提供”“給予”,其后可以接雙賓語(直接賓語通常為抽象概念),若雙賓語交換位置,要用介詞 to(此時無需連用 can, be able to等)。如:
他的來訪給我們帶來極大的快樂。
正:His visit affords us great pleasure.
正:His visit affords great pleasure to us.
【篇三】2021年6月英語四級語法用法辨析
owever與but 的用法區(qū)別
兩者均可表示轉(zhuǎn)折或?qū)Ρ?,意為“但是”、“可是”、“然而”等,但有區(qū)別:
1. 表示轉(zhuǎn)折時,but 是連詞。如:
He is young but very experienced. 他雖年輕,但經(jīng)驗很豐富。
He has three daughters but no sons. 他有3 個女兒,但沒有兒子。
He likes sports, but his wife likes music. 他喜歡運動,而他妻子則喜歡音樂。
2. however 表示“然而”、“可是”時,有的詞書認為它是連詞,有的詞書認為它是副詞。之所以將其視為副詞,也許是因為像許多副詞一樣不僅能位于句首,而且能位于句中(注意前后使用逗號),甚至句末 (注意其前也用逗號)。如:
Later, however, he changed his mind. 可是他后來改變了主意。
He hasn't arrived. He may, however, come later. 他還沒有到,不過他等會兒可能會來。
He said that it was so; he was mistaken, however. 他說情況如此,可是他錯了。
注:以上各例中的 however 不能換成 but,但可用 but 來改寫。如:
He said that it was so, but he was mistaken. 他說情況如此,可他錯了。
3. 當連接兩個句子時,其前通常應用分號,或另起新句。如:
It's raining hard; however, I think we should go out. / It's raining hard. However, I think we should go out. 雨下得很大,但我想我們還得出去。
注:上例中的 however 不能換成 but,但可用 but 來改寫 (注意所用標點的變化)。如:
It's raining hard, but I think we should go out.