高中英语必修三第四单元教案.doc

(3,4) 重点词汇 1. n.[c] 系统；体系；制度；方法 systematic adj 有系统的; 有条理的 [典例] The solar system includes the sun and its eight planets. [练习] 根据意思完成句子。 1). The ______ ______ (教育系统) operates very differently in the US and China. 2). He introduced us a well-designed ______ ______ (铁路系统). 2.vt. (laid, laid, laying) 把放下；摆设；铺(地毯) ；产(蛋) [典例] 1). He laid his hand on my shoulder. 2). Who should we lay the blame on? [重点用法] lay短语： 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. 把重点放在某事上 [练习] 根据句子的意思在括号里填入适当的词或翻译。 1). The bird ______ its eggs in other birds’ nests. 2). He is a political leader that _____ _____ _____ _____ (非常强调) individual responsibility. 3). He ______ some money ______ for rainy days. adj. 有害的；伤害的 harm n.vt. 伤害（某人） 其反义词为harmless [典例] There is no harm in doing sth./It does no harm to do sth.做某事是个好主意(或没有坏处) ①It is harmful to your health to drink too much. ②He may say no，but there’s no harm in asking. [重点用法] be harmful to sb./sth. 对……有害 do harm to sb.= do sb. harm = harm sb. 对……有害；伤害…… [练习] 根据句子的意思在括号里填入适当的词或翻译。 1). Everyone knows that smoking is ______ to your health. 2). In many cases, too much care for children from parents might even do ______ to their growth. 3). 在阳光下看书对你的眼睛伤害很大。 _______________________________________________________________________________ Doctors always tell us that drinking too much________our health，but some people don’t care. A．is harm to　　　 B．does harmful toC．is harmful to　　　 D．do harm to 4. vi. 存在；生存 existence n. 存在 [典例] 1). Does life exist on Mars? 2). I can hardly exist on the wage I’ m getting. [重点用法] exist + prep. 存在于地方 exist on sth. 靠某物生存 [练习] 用exist的短语或其适当形式填空。 1). This plant ______ only ______ Australia. 2). Can you ______ ______ such a low salary? 3). I doubt the ______ (exist) of alien. vt.vi. (使)迷惑；(使)苦思 n.谜；难题 puzzled adj.无法了解的；困惑的 puzzling adj.令人费解的 [典例] Their reason for doing it is still a puzzl