2017--2018学年人教版必修四Unit 5 Theme parks Language points学案2
2017--2018学年人教版必修四Unit 5 Theme parks Language points学案2第1页

Unit 5 Theme parks Language points学案

(1). They produced young generally by __________________.

 它们一般通过孵蛋来繁衍后代。

【参考答案】laying eggs

【拓展延伸】

lay v. 放置;搁;下蛋;产卵

lay eggs 下蛋

lay sth. aside 把某物放在一边;积蓄(钱)

lay sth. down 把某物放下

lay the blame on sb. 责备某人

lay the table 摆桌子

lay emphasis / stress on sth. 把重点放在某事/某物上 【易混辨析】lie/lie/lay

动词原形 意义 过去式 过去分词 现在分词 lie 说谎 lied lied lying lie 躺;卧;位于 lay lain lying lay 放置;产卵 laid laid laying (2). (2017·北京改编)A machine with a specific purpose has another quality, one that we usually associate with living things: a wish to preserve its own ____________(exist).

【参考答案】existence

【拓展延伸】

1. exist vi. 存在;生存

 exist on (=live on) 靠......为生

 exist as作为......而存在;以......形态存在

 exist in(=lie in) 存在于......之中

 There exist(s)... 有/存在......

2. existence n. 存在

 in existence现存的,现有的

 come into existence产生;成立;开始存在

 bring into existence使发生;使产生

3. existing adj. 目前的,现存的