随着我国经济的快速发展，由于要和世界各地相互交流开来，英语这门语言目前已经在我国成为了必学的第二外语即普及开来，就连刚进入校门的小学生也能说几句英文。想必对小学生们来说，只要一提起be他们的脑海里就会闪现出各种存在着be的句子，那么，今天呢，沪江小编将带领着大家一起来为我们的老朋友be整理一下它的功能。

　　功能一，系动词be

　　be为连系动词，中心词义是"是"，句型为"主+系+表"结构。be的形式常用am, is, are(现在式);was, were(过去式);will/can/may/must be(助动词/情态动词+原形);have/has/had been(助动词+过去分词)等。如：

　　To help animals is helping people.(一般现在时)

　　The twins were very busy yesterday.(一般过去时)

　　It will be sunny tomorrow.(一般将来时)

　　She has been ill for over a week.(现在完成时)

　　功能二，助动词be

　　助动词be，无词义，辅助主要动词一起在句中作谓语动词。用法如下：

　　1. be+doing：构成进行时态，有现在和过去两种进行时态。如：

　　The girls is reading and copying the new words now.

　　Young Tom was always asking questions and trying out new ideas.

　　2. be+done：构成被动语态(主语是动作的承受者，done必须是及物动词)。如：

　　Tea is grown in my hometown.(一般现在时的被动语态)

　　This building was built three years ago.(一般过去时的被动语态)

　　Our classroom has been cleaned and tidied already.(现在完成时的被动语态)

　　How could this kind of cakes be made in your home?(含情态动词的被动语态)

　　That is a day never to be forgotten.(动词不定式的被动语态)

　　3. be+going to do，表示"打算或将要做某事"，be有现在和过去两种形式。如：

　　We are going to plant trees in the park.

　　I didn't know if she was going to come here.

　　4. be+to do，表示"按计划安排将要做某事"。如：

　　The new shop is not to be opened till next Monday.

　　One night an angel came to Mary and told her that she was to have this special boy.

　　功能三，there be

　　there be句式为：there be+主语部分+状语部分，表示"某处存在某物"，be常用现在时，过去时和将来时等。如：

　　Oh, cool! And there are many things to see. There is even a deer park in Sanya.

　　There are about 80 pyramids in Egypt.

　　Will there be a football match in your school next week?

　　功能四，实义be

　　可以将be视为实义动词，因为它具有实际的词义，如"成为;做;发生;举行;逗留;到达"等。如：

　　His daughter wants to be a doctor for animals in her twenties.

　　Kate's birthday party will be at half past six this evening.

　　Jim has been in China for more than two years, but he has not yet been to Yichang.

　　沪江小编觉得，学习英语是一件相对来说较为乏味的事情，反过来想，当我们对一件不得不做的事情感到乏味时，为何不放些趣味在里面呢?在玩中学，在学中玩。小学的学生年龄不大，注意力也不及大人，通过整理，编排，一些趣味的学习会是孩子们的情绪高涨不已。单词be作为一个大众脸单词，在不影响本意的情况下，若稍加修饰，整理应该会更能让孩子们接受。