作为助动词，be没有具体含义，而是与主要动词一起构成句子的谓语动词。这种情况下，be主要用来构成进行时和被动语态。下面小编告诉你初一年级英语be动词的用法，大家一起来看看吧!
初一年级英语be动词的用法:
(一)进行时态中的be
此时，be可以与主要动词的现在分词一起，构成各种进行时态。如:
He is reading in the library now. (现在进行时)
She wasswimming in the river this time yesterday. (过去进行时)
They will be arriving in Beijing tomorrow. (将来进行时)
We have been learning English for ten years. (现在完成进行时)
[图片0]
(二)被动语态中的be
助动词be能够与主要动词的过去分词一起构成被动语态，即be done结构。如:
Chinese iswidely used around the world nowadays.
The window wasbroken by the naughty boy just now.
Your watch has already beenrepaired.
【注意】
助动词be能够构成特殊句型。如:
1、be going to do
be going to do表示“打算或将要”。如:
He isgoing to visit us next week.
It isgoing to rain soon.
2、be about to do
be about to do表示“刚要，即将”。与be going to do表“将要”不同的是，be about to do表示的是说完话后马上就要去做或是短期内马上就要去做。如:
The plane isabout to take off in five minutes' time.
3、be to do
be to do表示“按计划要做”。如:
One night an angel came to Mary and told her that she wasto have this special boy.
The new store isto be opened tomorrow.
含there be结构的几类重要句式:
一、There is no / some / much / little difficulty / trouble with sth. 做某事(没) 有困难
(1) There is some difficulty with the text. 这篇课文还有点困难。
(2) There is little trouble with the matter. 这件事情没有什么麻烦。
二、There is no / some / little / much difficulty / trouble in + doing. 做某事有困难
(1) There is much difficulty in finishing the work in the given time. 在规定的时间内完成这项工作还很困难。
(2) There is no trouble in reading the article without a dictionary. 即使不用词典读这篇文章也不难。
[图片1]
三、There is no doubt about / of sth. 毫无疑问……
(1) There is no doubt about his coming here. 毫无疑问，他会来。
(2) There is no doubt of his words. 对他的话毋庸置疑。
四、There is no doubt that –clause. 毫无疑问……
(1) There is no doubt that he has made great progress this year. 毫无疑问，他今年进了大步。
(2) There is no doubt that he likes hunting. 毫无疑问，他喜欢狩猎。
五、There is no hurry (+ to do sth) 不用急于干某事
(1) There is no hurry to leave, for it is early. 天还早，不要急于离开。
(2) There is no hurry to answer this question, but use your head. 动动脑筋，不要急于回答这个问题。
There be句式的特殊用法:
▲ 英语中的 There，除了表示地点“在那里”外，还有一个非常重要的用法，就是:充当引导词的角色，同时，引起句子结构上的倒装。具体表现在:
1. There be 存在句:——最原始最典型的倒装
谈到倒装句，人们都不陌生，认为它是一个很重要的句式。其实，在一个人刚刚开始学英语的时候，就已经学到了真正意义上的倒装句:There be 句型。
There is a book on the desk. 去掉引导词 There，原来的倒装句则变成:A book is on the desk.
What is there on the desk? 实际等于说:What is on the desk?
There be是倒装句，表存在，不必细说。
2. There + 不及物动词 + 主语:——最常见的倒装
There lived an man in the forest long ago. 很久以前，森林中住着一位老人。
There stands a temple on the top of the mountain. 山顶上有一座庙。
There goes the bell. Let’s have our class. 铃声响了，我们上课吧。
最后一句 There goes the bell. There 除了引起句子结构的倒装外，还提醒听者注意。
3. “There + be + 过去分词 + 主语” 和“There + be + 过去分词 + 主语”——最特殊的倒装
▲“There + be + 过去分词 + 主语”，其实是被动语态的变式，去掉引导词 There，还原本来面目。现在，我直接使用网友的句子为例:
There are now published millions of books very year in China .
等于:Millions of books are now published very year in China.
On the following day, there was held a splendid banquet.
等于:On the following day, a splendid banquet was held.
There was shown at the exhibition an electronic computer made in Shanghai .
等于:An electronic computer made in Shanghai was shown at the exhibition.
▲“There + be + 现在分词 + 主语”，其实是不及物动词进行时态的变式，去掉引导词There，还原本来面目。现在，我直接使用网友的句子为例:
There were running in the garden a group of children aged from seven to twelve.
等于:A group of children aged from seven to twelve were running in the garden.
there be句式用于被动式:
■有通常情况下，there be句式中的 be表示“存在”。如:
There are numerous islands off the coast. 海岸边有许多岛屿。
There was a bed and a big wardrobe. 有一张床和一个大衣橱。
There was a rainbow in the sky. 天上有一道彩虹。
If there is any problem, let me know. 如果有什么问题可以通知我。
There is only one person I could approach. 只有一个人我可以去找。
There are in China over fifty minorities besides the Han nationality. 在中国除了汉族还有五十多个少数民族。
There is a lack of communication between the young and the old. 年轻人和老人之间沟通不足。
■但是，有时there be结构还可用被动式，这时be即变成了助动词，如:
There are now published thousands and millions of books every year. 现在每年出版上亿册书。
On the following day, there was held a splendid banquet. 第二天举行了盛大的宴会。