Be作為系詞(也叫連接動詞),是英語學習者最早的用法,它有很多用法 。這里是小學英語be動詞的用法詳解,讓我們看看!
小學英語be動詞的用法詳解:
【be動詞的用法是小學幾年級的 小學英語什么是be動詞】一、系動詞be
(一)be的時態變化
系動詞be會有一般現在時、一般過去時、一般將來時、現在完成時、過去完成時等的時態變化 。如:
He isa student.
They werein the park yesterday.
It will be cloudy tomorrow.
He has been ill for six days.
It had been three hours before she left the hat shop.
(二)be與情態動詞的連用
其用法為:情態動詞+系動詞be原形 。如:
It must be Lucy's book. Her name is on the cover.
It can be very difficult for us to memorize too many words within such a short time.
She should be here on time tomorrow.

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二、特殊句型中的be
(一)There be句型
與上面用法都不同的是,be可以與there一起構成there be句型,用來表示存在 ??紤]到There be句型較為重要,內容較多,在此不做贅述,后面再找時間跟大家單獨分享 。今天就先給幾個常見的例句 。
There is a white ruler on the desk.
There were a great many people in the car race last year.
(二)祈使句中的be
這種情況下,句子一般以Be開頭或是Don't be開頭,表示命令或建議等 。如:
Bepatient! (耐心點!)
Don't be so hard on me! (不要對我們這么嚴厲!)
(三)虛擬語氣中的be
be有時可以放在句首,引起虛擬語氣 。如:
Be he rich or poor, she will marry him.
Be it true or not, she will see it herself.
此時的be引導的句子其實相當于一個讓步狀語從句 。以上兩句話就相當于:
Whether he be rich or poor, she will marry him. (無論他是否有錢,她都會嫁給她 。)
Whether it be true or not, she will see it herself. (無論這是否是真的,她都會親自去見證 。)
there be 句式的語法要點:
一、概說
英語中的there be結構主要表示某處存在有某物,所以通常被稱為存在句 。其中的there為引導詞,無詞義,be為謂語動詞,there be后面的名詞為句子主語 。
二、there be結構的主謂一致問題
在there be句型中,若句子只有一個主語,謂語的數則取決于該主語的數;若有幾個主語并列,則通常是與靠近的主語保持一致 。如:
There is no cause for anxiety. 不必焦慮 。
There is some dirt on your coat. 你的外套上有灰塵 。
There are twenty children present. 在座的有20個孩子 。
There is a teacher and some students over there. 那邊有一位老師和一些學生 。

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三、there be結構的時態問題
there be結構的時態由其中的謂語動詞be來體現,它可以有一般現在時、一般將來時、一般過去時、現在完成時以及過去完成時等多種時態形式 。如:
There will be a rise in unemployment next year. 明年失業人數將會增加 。
There have been a series of car accidents at the crossing. 在這個交叉路口已發生了一連串的車禍 。
There had been two sea fights between them. 他們之間發生了兩場海戰 。
四、there be結構與情態動詞連用
there be結構有時可以與情態動詞連用 。如:
There may be an opportunity for you to see the premier. 你可能有機會見到總理 。
There must be something wrong with my left arm, which is asleep.我的左臂發麻,一定出什么問題了 。
There used to be a lot of troubles in that region. 那個地區過去動亂不斷 。
五、there be結構的非謂語形式
there be結構的非謂語形式有兩種基本結構,即there being和there to be 。一般說來,there being結構主要用作狀語或介詞賓語;There to be 結構主要用作動詞賓語 。如:
There being no further business, I declared the meeting closed. 沒有更進一步的情況(討論),我就宣布閉會 。
There is now some hope of there being a settlement of the dispute. 現在有點希望可以解決這次爭端 。
We expect there to be more discussion about this. 我們期望能對此展開更多的討論 。
注:用作介詞賓語一般用there being,但用作介詞for的賓語時,只能用there to be 。比較:
They planned on there being another meeting. 他們打算再開一次會議 。
They planned for there to be another meeting. 他們打算再開一次會議 。
哪些動詞后面可以接there to be結構:
英語中能接there to be結構的動詞不多,比較常見的有believe, cause, consider, expect, hate, intend, like, love, mean, prefer, understand, want, wish等 。如:
I didn’t expect there to be such a crowd. 我沒想到會那么大一群人 。
Students hate there to be too much homework. 學生討厭做太多的家庭作業 。
We’d prefer there to be an adult in charge. 我們寧愿有個成年人來負責 。
We understood there to be money available. 我們認為有錢可用 。
We don’t want there to be any misunderstandings. 我們不希望有任何誤解 。
You wouldn’t like there to be another war, would you? 你不會愿意再有一次戰爭吧,是嗎?
The tree caused there to be a long shadow on the grass. 那棵樹在草地上投下長長的影子 。
注:動詞let也可以用以上結構,但不定式不帶to,即用let there be這樣的形式 。如:
Let there be no mistake about it. 不要對此有任何誤解 。
有關there be結構的若干句式:
■There is no / some / much / little difficulty / trouble with sth. 做某事(沒) 有困難 。如:
(1) There is some difficulty with the text. 這篇課文還有點困難 。
(2) There is little trouble with the matter. 這件事情沒有什么麻煩 。
■There is no / some / little / much difficulty / trouble in + doing. 做某事有困難 。如:
(1) There is much difficulty in finishing the work in the given time. 在規定的時間內完成這項工作還很困難 。
(2) There is no trouble in reading the article without a dictionary. 即使不用詞典讀這篇文章也不難 。
■There is no doubt about / of sth. 毫無疑問… 。如:
(1) There is no doubt about his coming here. 毫無疑問,他會來 。
(2) There is no doubt of his words. 對他的話毋庸置疑 。
■There is no doubt that –clause. 毫無疑問… 。如:
(1) There is no doubt that he has made great progress this year. 毫無疑問,他今年進了大步 。
(2) There is no doubt that he likes hunting. 毫無疑問,他喜歡狩獵 。
■There is no hurry (+ to do sth) 不用急于干某事 。如:
(1) There is no hurry to leave, for it is early. 天還早,不要急于離開 。
(2) There is no hurry to answer this question, but use your head. 動動腦筋,不要急于回答這個問題 。
■There is no need for (sb. to do ) sth. 沒有必要怎么樣 。如:
(1) There is no need for him to go there. 她沒有必要去那兒 。
(2) There is no need for such a meeting. 沒有必要開這樣的會議 。
■There is no question about sth. 毫無疑問… 。如:
(1) There is no question about his arrangement. 對他的安排毋庸置疑 。
(2) There is no question about what he said. 對他的話毋庸置疑 。
■There is no question of doing sth. 毫無疑問… 。如:
(1) There is no question of his leaving for holiday. 他肯定去度假了 。
(2) There is no question of his inviting us to his party. 他肯定會邀請我們去參加他的聚會 。
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