第三人稱單數：is現在分詞：being過去分詞：been過去式：was; were
be基本解釋
動詞是; 有，存在; 做，成為; 發生
助動詞用來表示某人或某物即主語本身，用來表示某人或某物屬于某一群體或有某種性質
be相關例句
動詞
1. What were you doing from 9 to 11 this morning?
今天上午九點到十一點你在做什么？
2.
2. You're to do your homework before you watch TV.
你應該做了功課再看電視。
不及物動詞
1. Tony is in the office.
湯尼在辦公室里。
2. He'll be at his uncle's till next Friday.
他要在他舅舅家呆到下星期五。
3. be的意思
3. It was not to be.
不應有此事。
be情景對話
否定表達
A：My advice would be to finish it at once.
我的建議是立刻做完。
B：It’s unnecessary.
B：沒必要。
租房
A：Don’t (worry/ be concerned) about the security deposit.
別擔心押金。
B：O.K. Great.
好的，好。
購物
be在線翻譯
B：Yes, it seems to be (working fine/ operating/ functioning properly).
是的，好像（有用了/可以運行了/可以正常使用了）。
A：Great.
太好了。
be網絡解釋
1. 比利時：[地址]比利時沙勒羅瓦 [申請人]阿爾斯托姆比利時股份有限公司 [公開號]1289475 [國家省市]比利時(BE) [國際分類]H02M7/00 [摘要] 本發明涉及由IGBT型靜態開關組成的、用直流電源電壓(Ucat)供電的功率轉換器,
2. be：bound energy; 結合能
3. be：barrett ′ s esophagus; barrett食管
4. be：bases excess; 堿剩余
5. be：bacteria exudation; 噴菌現象
be詞典解釋
助動詞用法（AUXILIARY VERB USES）
In spoken English, forms of be are often shortened, for example ‘I am’ is shortened to ‘I'm’ and ‘was not’ is shortened to ‘wasn't’.1. （和現在分詞連用構成動詞的進行式）
You use be with a present participle to form the continuous tenses of verbs.
e.g. This is happening in every school throughout the country...
全國各地每所學校都在發生這樣的事情。
e.g. She didn't always think carefully about what she was doing...
她對自己在做的事情并不總是考慮得很清楚。
2. （和過去分詞連用構成被動語態）
You use be with a past participle to form the passive voice.
e.g. Forensic experts were called in...
法醫專家被請來。
e.g. Her husband was killed in a car crash...
她的丈夫死于車禍。
3. （和不定式連用表示將來的安排或確定會發生的事情）
You use be with an infinitive to indicate that something is planned to happen, that it will definitely happen, or that it must happen.
e.g. The talks are to begin tomorrow...
談判將于明天開始。
e.g. It was to be Johnson's first meeting with the board in nearly a month...
這將是近一個月來約翰遜首次和董事會碰面。
4. （和不定式連用表示在某種情況下會發生什么事，應該怎樣做或應該由誰來做）
You use be with an infinitive to say or ask what should happen or be done in a particular situation, how it should happen, or who should do it.
e.g. What am I to do without him?...
沒有他，我該怎么辦？
e.g. Who is to say which of them had more power?...
誰來決定他們之中誰的權力應該更大一些？
5. （was和were和不定式連用，表示說話時間之后發生的事）
You use was and were with an infinitive to talk about something that happened later than the time you are discussing, and was not planned or certain at that time.
be
e.g. Then he received a phone call that was to change his life...
然后，他接到一個將改變他一生的電話。
e.g. A few hours later he was to prove it.
幾個小時之后他將證明這一點。
6. （表示可見到、可聽到、可發現等）
You can say that something is to be seen, heard, or found in a particular place to mean that people can see it, hear it, or find it in that place.
e.g. Little traffic was to be seen on the streets...
街上車輛很少。
e.g. They are to be found all over the world.
它們遍布于世界各地。
其他動詞用法（OTHER VERB USES）
In spoken English, forms of be are often shortened, for example ‘I am’ is shortened to ‘I'm’ and ‘was not’ is shortened to ‘wasn't’.1. （用于提供與主語相關的信息）
You use be to introduce more information about the subject, such as its identity, nature, qualities, or position.
be的翻譯
e.g. She's my mother...
她是我母親。
e.g. This is Elizabeth Blunt, BBC, West Africa...
英國廣播公司的伊麗莎白·布倫特在西非為您報道。
2. （以it作主語，用來進行描述或作出判斷）
You use be, with 'it' as the subject, in clauses where you are describing something or giving your judgment of a situation.
e.g. It was too chilly for swimming...
這時候游泳太冷了。
e.g. Sometimes it is necessary to say no...
有時候拒絕是必要的。
3. （與非人稱代詞there連用構成there is和there are表示存在或發生）
You use be with the impersonal pronoun 'there' in expressions like there is and there are to say that something exists or happens.
e.g. Clearly there is a problem here...
顯然，這里出了個問題。
e.g. There are very few cars on this street...
這條街道上車輛很少。
4. （表示主語和從句和其他從句結構之間的某種聯系）
You use be as a link between a subject and a clause and in certain other clause structures, as shown below.
e.g. It was me she didn't like, not what I represented...
她不喜歡的是我，而不是我的陳述。
e.g. What the media should not do is to exploit people's natural fears...
媒體不應該利用人們天生的恐懼心理。
5. （用在如the thing is和the point is這樣的結構中，引導表示陳述或提出觀點的從句）
You use be in expressions like the thing is and the point is to introduce a clause in which you make a statement or give your opinion.
e.g. The fact is, the players gave everything they had...
事實上，選手們盡了全力。
e.g. The plan is good; the problem is it doesn't go far enough.
計劃不錯；問題在于不夠深入。
6. （用在如to be fair, to be honest或to be serious 這樣的結構中表示盡量）
You use be in expressions like to be fair ,to be honest, or to be serious to introduce an additional statement or opinion, and to indicate that you are trying to be fair, honest, or serious.
e.g. She's always noticed. But then, to be honest, Ghislaine likes being noticed...
她總是受到關注。但是說句實在話，吉萊納喜歡被人關注。
e.g. It enabled students to devote more time to their studies, or to be more accurate, more time to relaxation.
它可以讓學生們有更多的時間來學習，或者更準確一點說，有更多的時間來放松自己。
7. （有時用來代替現在時態中be的幾個常規形式，尤用于whether后）
The form 'be' is used occasionally instead of the normal forms of the present tense, especially after 'whether'.
e.g. The chemical agent, whether it be mustard gas or nerve gas, can be absorbed by the skin.
這類化學制劑，不管是芥子氣還是神經瓦斯，都會被皮膚吸收。
8. 存在
If something is, it exists.
e.g. It hurt so badly he wished to cease to be.
他覺得疼痛難忍，恨不得死了算了。
e.g. ...to be or not to be.
活著還是死去
9. 保持真我；按自己的方式行事；顯常態
To be yourself means to behave in the way that is right and natural for you and your personality.
be的意思
e.g. She'd learnt to be herself and to stand up for her convictions.
她已經學會了按自己的方式行事，堅持自己的信仰。
10. 非常；極為
If someone or something is, for example, as happy as can be or as quiet as could be, they are extremely happy or extremely quiet.
11. 如果不是…的話；如果沒有…的話
If you talk about what would happen if it wasn't for someone or something, you mean that they are the only thing that is preventing it from happening.
e.g. I could happily move back into a flat if it wasn't for the fact that I'd miss my garden...
如果不是因為我會想念自己的花園的話，我會很樂意搬回公寓住。
e.g. If it hadn't been for her your father would be alive today.
如果不是因為她，你父親今天可能還活著。
12. 盡管那樣；即便如此
You say 'Be that as it may' when you want to move onto another subject or go further with the discussion, without deciding whether what has just been said is right or wrong.
be的近義詞
e.g. 'Is he still just as fat?' — 'I wouldn't know,' continued her mother, ignoring the interruption, 'and be that as it may, he has made a fortune.'
“他還是那么胖嗎？”——“我不知道，”她媽媽接著說，沒有理睬這一打岔，“就算那樣，他已經發財了。”
13. 身體不舒服；身體不適
If you say that you are not yourself, you mean you are not feeling well.
e.g. She is not herself. She came near to a breakdown.
她身體不舒服，簡直要崩潰了。