一般在什么情况下用“be”这个单词?不是指be包括的（is,are,am等）.就是指“be”这个单词该在什么情况下用?

一般在什么情况下用“be”这个单词?不是指be包括的（is,are,am等）.就是指“be”这个单词该在什么情况下用?
一般在什么情况下用“be”这个单词?
不是指be包括的（is,are,am等）.就是指“be”这个单词该在什么情况下用?

一般在什么情况下用“be”这个单词?不是指be包括的（is,are,am等）.就是指“be”这个单词该在什么情况下用?
比如It's good to be a teacher.
不定式可以用
还有一些专门后面接动词原型的地方 比如will 后面

你问的真好，形容词/名词前面阿

/bɪ; bɪ; strong form 强读式 biː; bi/ v =>Usage at be2 用法见be2. 1 (used after there and before a/an, no, some, etc+ n 用於there之后及a/an、no、some等+名词之前) (a) exist; occur; live 有; 存在; 生存: Is there...

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/bɪ; bɪ; strong form 强读式 biː; bi/ v =>Usage at be2 用法见be2. 1 (used after there and before a/an, no, some, etc+ n 用於there之后及a/an、no、some等+名词之前) (a) exist; occur; live 有; 存在; 生存: Is there a God? 有上帝吗? * For there to be life there must be air and water. 一定要有空气和水才有生命. * There are no easy answers. 现成的答案是没有的. * There are many such people. 这样的人多的是. * Once upon a time there was a princess. 从前有一个公主. * There have been cows in that field since my grandfather's time. 从我祖父那时候起, 那片地上就养著牛. (b) be present; stand 在; 在场: There's a bus-stop down the road 路的前方有一个公共汽车站. (Cf 参看 The bus-stop is down the road.) There were no books on the shelf. 书架上没有书. * There are some good photographs in this exhibition. 这一展览会上有些好照片. 2 (with an adv or a prepositional phrase indicating position in space or time 与表示地点或时间的副词或介词短语连用) (a) be situated 位於; 处於: The lamp is on the table. 灯在桌子上. * The stable is a mile away. 马房距此一英里远. * Mary's upstairs. 玛丽在楼上. * John's out in the garden. 约翰在外面花园里. * They are on holiday in the Lake District. 他们在英格兰湖区度假. (b) happen; occur; take place 发生; 产生; 举行: The party is after work. 聚会在下班后举行. * The election was on Monday. 选举是在星期一进行的. * The concert will be in the school hall. 音乐会将在学校的礼堂内举行. * The meetings are on Tuesdays and Thursdays in the main hall. 会议在星期二和星期四於大礼堂举行. (c) remain 停留; 逗留; 待: She has been in her room for hours. 她在自己的房间里待了几个小时. * They're here till Christmas. 他们在这里要一直逗留到圣诞节. (d) attend; be present 出席; 到场: Were you at church yesterday? 昨天你去过教堂吗? * I'll be at the party. 我参加这个聚会. 3 (with an adv or a prepositional phrase indicating direction, a starting point, etc 与副词或介词短语连用表示方向、起点等) leave; arrive 离开; 到达: I'll be on my way very soon. 我很快就要上路. * She's from Italy, ie Her native country is Italy. 她是意大利人（她?
be2
/bɪ; bɪ; strong form 强读式 biː; bi/ aux v =>Usage 见所附用法 1 (used with a past participle to form the passive 与过去分词连用构成被动语态): He was killed in the war. 他阵亡了. * Where were they made? 这些东西是在哪里制造的? * The thief was caught. 窃贼被捉住了. * The house is/was being built. 那房屋正在[那时正在]建造. * You will be severely punished if you do not obey. 你不服从, 就会受到严惩. 2 (used with present participles to form continuous tenses 与现在分词连用构成进行时态): They are/were reading. 他们正在[那时正在]阅读. * I am studying Chinese. 我正在学习汉语. * I shall be seeing him soon. 我不久就会见到他了. * What have you been doing this week? 你这星期以来在干什麽? * I'm always being criticized. 我总是挨批. 3 (with to + infinitive 与to+不定式连用) (a) (expressing duty, necessity, etc 表示责任、需要等): I am to (ie I have been told to) inform you that... 我有义务（我受人之托）通知你... * You are to report (ie must, should report) to the police. 你应该报警. (b) (expressing arrangement, intention or purpose 表示安排、意向或目的): They are to be married, ie will be married. 他们打算结婚. * Each participant was to pay his own expenses. 每个参加者都必须自费. * The telegram was to say that she'd be late. 电报说她可能晚到. (c) (expressing possibility 表示可能性): The book was not to be (ie could not be) found. 那本书找不到了. (d) (expressing destiny 表示注定): He was never to see his wife again, ie Although he did not know it at the time, he did not see her again. 他从那以后就再也见不到他的妻子了. * The celebrations were not to be, ie They did not, in fact, take place. 庆祝活动结果未能举行. (e) (only in the form were, expressing supposition 仅用were这一形式, 表示假设): If I were to tell you/Were I to tell you that I killed him, would you believe me? 假如我对你说是我杀死了他, 你相信吗? * If it were to rain, we would have to cancel the match tomorrow. 假如下雨, 我们只好取消明天的比赛.
be3
NOTE ON USAGE 用法: Be is used as a main verb (be1) and as an auxiliary verb (be2). *be可用作主要动词 (be1), (be2). The various written and spoken forms are the same for both verbs 两者的各种书面语和口语形式均相同: am (pres t with I)/əm, m;m/, strong form/m; æm/; written contraction I'm/aɪm; aɪm/; negative question aren't I?/ˈɑːntaɪ; US ˈɑːrəntaɪ; ɑrnt aɪ/. *am （现在时态与 I/əm, m; m/, 强读式/m; Am/; 书写缩约式 I'm/aɪm; aɪm/; 否定疑问式 aren't I?/ˈɑːntaɪ; 美式 ˈɑːrəntaɪ; ɑrnt aɪ/. *is (pres t with he, she, it)/s, z; s, z/, strong form/ɪz; ɪz/; written contractions it's/ɪts; ɪts/, Jack's/dʒks; dʒæks/, he's/hi:z, hIz; hIz/, she's/ʃiːz, ʃɪz; ʃɪz/, the cow's/ðə kauz; ðəˋkaʊz/; negative isn't/ˈɪznt; ˋɪznt/. *is（现在时态与hesheit连用）/s, z; s, z/, 强读式/ɪz; ɪz/; 书写缩约式it's/ɪts; ɪts/, Jack's/dʒks; dʒæks/, he's/hiːz, hɪz; hɪz/,she's/ʃiːz, ʃɪz; ʃɪz/, the cow's/ðə kauz; ðə ˋkaʊz/; 否定式 isn't/ˈɪznt; ˋɪznt/. *are (pres t with you, we, they)/E(r); L/, strong form/ B:(r); Br/; written contractions we're/wɪə(r); wɪr/, you're/juə(r), jɔː(r); jʊr/, they're/TeE(r); Ter/; negative aren't/ɑːnt; US ˈɑːrənt; ɑrnt/. *are（现在时态与youwethey连用）/E(r); L/, 强读式/ B:(r); Br/; 书写缩约式 we're/wɪə(r); wɪr/, you're/jUE(r), jR:(r); jJr/, they're/ðeə(r); ðer/; 否定式 aren't/ɑːnt; 美式 ˈɑːrənt; ɑrnt/. *was (pt with I, he, she, it)/wEz; wEz/, strong form/wɔz; US wʌz; wʌz/; negative wasn't/ˈwɔznt; US ˈwʌznt; ˋwʌznt/. *was （过去时态与Ihesheit连用）/wEz; wEz/, 强读式/wɔz; 美式 wʌz; wʌz/; 否定式 wasn't/ˈwɔznt; 美式 ˈwʌznt; ˋwʌznt/.*were (pt with you, we, they)/wə(r); wɚ/, strong form/w\:(r); w[/; negative weren't/wɜːnt; US ˈwɜːrənt; wənt/.*were （过去时态与 you we they连用）/wE(r); wL/, 强读式/wɜː(r); wə/; 否定式 weren't/wɜːnt; 美式ˈwɜːrənt; wənt/. *being (pres p)/ˈbiːɪŋ; ˋbiɪŋ/. *being/ˈbiːɪŋ; ˋbiɪŋ/. *been (pp)/biːn; US also bɪn; bɪn/. *been（过去分词）/bi:n; 美式 bIn; bIn/.

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be是is, are, am的原型
在to后，如I want to be a teacher.
Don't后面Don't be annoyed.
Be good, do right.
不是概括，只是我暂时想到的，希望能帮到你。

不定式 to be myself
需要跟原形的动词后面make/have/...+sb./sth.+be ...(被动时)
被动时态的进行时,he is being examined ,用be-ing

用在一些只能接动词原形的地方