新概念英语第二册逐句精讲语言点 第82课(3)

　　It had a head like a horse, big blue eyes, shining silver skin, and a bright red tail. The fish, which has since been sent to a museum where it is being examined by a scientist, is called an oarfish. Such creatures have rarely been seen alive by man as they live at a depth of six hundred feet.

　　句子讲解：

　　8、It had a head like a horse, big blue eyes, shining silver skin, and a bright red tail.

　　它长着一个像马一样的头，有着大大的蓝眼睛和闪闪发光的银色皮肤，还有一条鲜红色的尾巴。

　　9、The fish, which has since been sent to It is being examined by a scientist, is calted.

　　此鱼叫桨鱼，被送进了博物馆，现在正接受一位科学家的鉴定。

　　语言点 it is being examined现在进行时的被动语态，表示"正在被鉴定中"。

　　现在进行时的被动语态用法：

　　1)“be being done” 中的动词be应随主语(sing. / pl.)作相应的变化。

　　2)将现在进行时的主动语态变为现在进行时的被动语态的关键是：把be doing变为be being done

　　例句. The students are cleaning the classroom now. →The classroom is being cleaned now.

　　现在学生们正在打扫教室。 (are cleaning变为is being cleaned)

　　10、Such creatures have rarely been seen alive by man as they live at a depth of six hundred feet.

　　人们很少能看到这类活着的动物，因为它们生活在600英尺深的深海中。

　　语言点 have rarely been seen alive为现在完成时的被动语态。

　　现在完成时的被动语态的肯定式为：have/ has +been +done。

　　如：The experiment has been done successfully. 这个实验做得很成功。

　　现在完成时的被动语态的否定式为：have/ has +not +been +done。

　　如：Tom’s novel has not been published. 汤姆的小说还没有被出版。

　　现在完成时的被动语态的一般疑问句需将have /has提到主语的前面。

　　如：Has his bike been repaired? 他的自行车修好了吗?

　　现在完成时的被动语态的特殊疑问句为：疑问词+have /has +been +done?

　　如：Who has been invited? 谁受到了邀请?

　　对比现在进行时的被动语态用法与现在完成时被动语态

　　现在进行时的被动语态：现在进行时的被动语态表示此时此刻某事正在被做.

　　现在完成时被动语态：可强调到目前为止某被动性动作或状态已存在若干时间。 现在完成时被动语态可用来强调发生在过去的被动性动作对现在造成影响.