新概念英语第二册考试培训班辅导

【新概念英语第二册考试培训班辅导】5.Visitors have been asked to keep the woods clean and tidy.游客已被告知要保持树林的整洁。 　　现在完成时的被动语态，说明需求的行为应为游客所知。(句中 have been asked是被动语态的完成时结构。详见本课语法部分。)to keep the woods clean and tidy 是动词不定式短语，作主语visitors的补足语。clean and tidy 是宾语 the woods 的宾语补足语。 　　clean and tidy 表示“整洁的，清洁的”这是英语中的常用结构，其它常见的类似结构还有：black and blue 青一块紫一块;happy and gay 高高兴兴 　　heart and soul 全心全意，一心一意 　　6.go for a walk，去散步。 　　7.What I saw made me very sad.我所见到的一切使我非常难过。 　　句中的主语 What I saw 是 what 引导的名词性从句(主语从句)。例如： 　　What the little boy did surprised his mother. 那个小男孩所做的一切使他母亲十分惊讶。 　　What you do makes me happy. 你所做的是我愉快。 　　8. The litter baskets were empty and ground was covered with pieces of paper，cigarette ends，old tyres，empty bottles and rusty tins. 　　句中 and 连接的并列句，“the litter baskets were empty” 与“groun was ... 分别为两个并列分句，be covered with ... 被 ...... 覆盖。如： 　　The desks are covered with dust. 桌子上布满了灰尘。 　　The ground was covered with snow. 地上覆盖着雪。