在语法里，时或时态表示行为发生的时间和说话时的关系。时态是表示行为、动作、状态在各种时间条件下的动词形式，下面是小编收集整理的*英语动词时态练习，大家一起来看看吧!   *英语动词时态练习：   1、The scientist ___________ (give) us a talk yesterday.   2、My parents ___________ (live) in Beijing since 1949.   3、Look! The young worker___________ (show) the students around the factory now.   4、They ___________ (build) a new bridge over the river next year.   5、The students___________ (clean) their classroom tomorrow.  

  6、The windows of our lab ___________ (clean) once a week.   7、Our teacher ___________ (join) the party twenty years ago.   8、The boys___________ (have) a basketball match now. Let’s ___(go) and _____(watch).   9、She___________ (work) in this factory for ten years.   答案：1. gave 2. have lived 3. is showing 4. will build 5. will clean 6. is cleaned 7. joined 8. are having, go … watch 9. has worked   现在进行时的理解与用法：   一、如何理解   顾名思义，现在进行时就是指说话时正在进行的动作或发生的情况。如汉语说的“我在看书”“他在吃饭”“火车在行驶”“秘书在打字”等，在英语中都要用现在进行进来表达，因为它们所涉及的动作在说话的时刻都正在进行。     二、构成与用法   现在进行时由“am / is / are + 现在分词”构成。如：   She is still sleeping. 她还在睡觉。   We are waiting for the rain to stop. 我们在等雨停。   They are playing quietly now. 他们在安静地玩着。   过去完成时的用法：   (1) 某些动词如intend / think / plan / expect / hope等的过去完成时表示主语未曾实现的愿望、希望或打算。如：   I had intended to come to see you last night, but someone called and I couldn’t get away. 我原打算昨晚来看你，但有人来访，我拖不开身。   He had hoped to find a job soon.他本来希望很快找到工作。   I had meant to come, but something happened. 我本想来，但有事就没有来。   (2)过去完成时用在hardly / scarcely…when…和no sooner…than 固定结构中。如：   No sooner was the frost off the ground than the work began. 地上的霜一消散，人们就开始工作了。   Hardly had he arrived when she started complaining. 他刚一到, 她就开始抱怨起来。   (3) 过去完成时用于条件分句或wish / would rather等后面的that从句中，表示与过去事实相反的主观愿望。如：   I would have met him, if I had come this morning. 今天早晨我来的话，就会见到他了。   I wish I had seen you yesterday. 我昨天见到你多好。   He would rather she had lent him more money than she did.他本希望她借给他的钱更多些。   before long 可以连用哪些时态：   1. 连用一般将来时   We’ll know before long (= soon). 我们很快就会知道了。   I’m going to get very cross before long. 我很快就会大发雷霆。   It’s likely that the law will be abolished before long. 这项法律很有可能不久就要废除。   You need to be careful, or you’ll run yourself into the ground before long. 你要小心点，不然过不了多久你就会累垮的。   2. 连用一般过去时   Before long the whole neighbourhood knew about it. 不久，整个小区都知道了这事。   Before long, the dispute degenerated into fierce polemics. 不久争论就演变成了激烈的论战。   One thing led to another and before long Sue and I were engaged. 事情一件接着一件, 不久之后我和休就订婚了。   Other students joined in the protest, and before long (=soon) there was a crowd of 200 or so. 其他学生也加入了抗议队伍，不久就有 200 人左右了。   We were called to the hospital twice, but the old man seemed to have nine lives, and before long made a complete recovery. 我们两次被召往医院，但老父亲大难不死，不久就完全康复了。