Don't keep me waiting for long.(现在分词)别让我等太久。

　　The other students in the class keep their eyes closed.(过去分词)班上其他同学都闭着眼睛。

　　二、用作连系动词

　　构成系表结构：keep＋表语，意为"保持，继续(处于某种状态)"。其中表语可用形容词、副词、介词短语等充当。如：

　　You must look after yourself and keep healthy.(形容词)你必须照顾好自己，保持身体健康。

　　Keep off the grass.(副词)请勿践踏草地。

　　Traffic in Britain keeps to the left.(介词短语)英国的交通是靠左边行驶的。

　　注意：一般情况下，keep后接形容词较为多见。再如：

　　She knew she must keep calm.她知道她必须保持镇静。

　　Please keep silent in class.课堂上请保持安静。

　　三、与介词或副词搭配，构成动词短语

　　1.keep away意为"(使)离开；(使)不接近"，其后常接介词from。如：

　　Would you keep your dog away from my boy, please? 请把狗拉得离我孩子远点好吗？

　　Keep everybody away from the accident.人人远离事故！

　　2.keep back意为"阻止；留在后面"。如：

　　She sat down quietly, but she couldn't keep

　　back her tears.她静静地坐下来，却忍不住流下了眼泪。

　　3.keep together意为"在一起；动作协调"。如：

　　Keep together, please.请聚在一起。

　　The eight men kept together during the boat race as though they were one.赛船时，这8个人动作协调，好像一个人似的。

　　4.keep up意为"持续；使不低落"。如：

　　The noise kept up all night.噪音整夜持续着。

　　To keep your strength up, eat well and get　enough sleep.为了保持力气，要吃好、睡足。

　　5.keep up with意为"跟上；和……来往"。如：

　　I'm trying my best to keep up with the others in class.我正在设法赶上班里的其他人。

　　Do you still keep up with Tom? 你和汤姆还有联系吗？

　　6.keep...in mind意为"把……记在心里"。如：

　　The teacher asked us to keep these sentences in mind.老师要我们把这些句子记在心里。

四、含keep的常用句型
　　1.keep doing sth. 意为"继续干某事"，表示不间断地持续干某事，keep后不能接不定式或表示静止状态的v-ing形式，而必须接延续性的动词。如：

　　He kept working all day, because he wanted to finish the work on time.他整天都在不停地工作，因为他想准时完成工作。

　　Keep passing the ball to each other, and you'll be OK.坚持互相传球，你们就行。

　　2.keep on doing sth. 意为"持续做某事"。如：

　　The pupil kept on asking me the same question.这个学生不断地问我同一个问题。

　　I kept on thinking about the match in the afternoon.我总是想起下午的那场比赛。

　　3. keep...from doing sth.意为"阻止/防止……做某事"。如：

　　The heavy snow kept us from going out.大雪使我们不能出去。

Be 的四功能

be是一个多功能动词，在初级英语里可见四种用法：
　　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.

there be中考知识点扫描

there be结构作为初中的一个重点句型，在教育部新颁布的《英语课程标准》中，作为简单句的基本句型列入其中，在各地中考试卷中也频频亮相。
　　
考点一：对there be基本理念的考查

　　1.—What did you see on the desk then?
　　　—There ________ a bottle of orange.
　　[03北京宣武区]
　　A. was B. were C. has D. had

　　2. There ________ an English film here tomorrow. [04武汉]