原句感知 自主探究 ①Both the headsets and the gloves are connected to a computer network in the VR studio.

②In one case, a teenager who was afraid of talking and playing with his schoolmates was treated with VR.

③To achieve this, special VR headsets are designed to allow the users to see in 3­D and hear the sound all around them.

④Engineers can enter the design of a neighbourhood into a computer, and then use VR to "walk" around the neighbourhood, see how it looks and make changes before construction is carried out.

⑤Besides this, VR can be used to practise skills in a secure environment that otherwise would be quite dangerous.

⑥However, with VR we are able to do things that could never be achieved in real life. (1)在被动语态的句子中主语是动作的承受者；

(2)在被动语态的句子中谓语的基本构成形式为：助动词 be＋及物动词的过去分词。

(3)在被动语态的句子中谓语可以有各种时态或含有情态动词。 　　

　　[语法剖析]

语法点一 语态的概念 　　英语中动词有主动语态 (Active Voice) 和被动语态 (Passive Voice) 之分。如果主语是动作或状态的发出者，动词就用主动语态；如果主语是动作或状态的承受者，动词就用被动语态。

　　Our English teacher encouraged Mary.

　　我们英语老师鼓励了玛丽。

　　Mary was encouraged by our English teacher.

　　玛丽受到了我们英语老师的鼓励。

　　第一句中的动词 encouraged 是主动语态；第二句中的动词 was encouraged 是被动语态。

语法点二 被动语态的基本构成形式 　　被动语态的基本结构是："助动词 be/get＋过去分词"。

　　被动语态的谓语动词有各种时态变化，以动词 take 为例，其常见时态的被动形式如下表：

一般现在时 am/is/are taken 一般过去时 was/were taken 现在进行时 am/is/are

being taken 过去进行时 was/were

being taken 现在完成时 have/has

been taken 过去完成时 had been taken 一般将来时 will/shall

be taken 过去将来时 would/should

be taken You are wanted on the phone.