1、SENTENCE EXPLANATIONS1. The World Wide Web (the web) is a computer network that allows computer users to access information from millions of websites via the Internet. (P52)【分析】本句是一个主从复合句。主句是“主语（The World Wide Web）+系动词（is）+_（a computer network）”结构。that引导定语从句，修饰先行词computer network。allow sb. to do sth
2、. 意为“允许某人做某事”。【句意】万维网是一种电脑网络，它能使电脑用户通过因特网从数以万计的网站中获取信息。【仿写】拉里是一只聪明的狗，它只允许熟悉的人进入院子。_2. Berners-Lee made it possible for everyone to use the Internet, not just universities and the army. (P52)【分析】本句是一个简单句。it作形式宾语，真正的宾语是后面的不定式短语。possible作宾语补足语。not just意为“不仅仅是”。【句意】贝尔纳斯李使任何人，而不仅仅是大学和军队，使用英特网成为了可能。【仿写】这趟
3、列车使任何人，而不仅仅是有钱人，去那个地方旅游成为了可能。_3. Berners-Lee built his first computer while he was at university using an old television! (P52)【分析】本句是一个主从复合句；主句是“主语（Berners-Lee）+谓语（built）+宾语（his first computer）”结构； while引导的是_从句，其中using an old television是动词-ing形式作方式状语。【句意】读大学时，贝尔纳斯李用一台旧电视机制成了他的第一台电脑。【仿写】在小学的时候，本曾用木头
4、为他的小狗搭了个漂亮的窝。_Key1.【分析】表语【仿写】Larry is a clever dog that allows only familiar people to come into the yard.2.【分析】to use the Internet 【仿写】This train made it possible for everyone to travel to that place, not just the rich.3.【分析】时间状语【仿写】Ben built a beautiful shelter for his dog while he was at primary school using some wood.
