Unit 6 An old man tried to move the mountains.

重点知识园地重点单词1.weak adj.虚弱的;无力的He was too weak even to lift his hand.他虚弱得连手都抬不起来。短语be weak in不擅长……;在……方面不行He is weak in sight and hearing.他的视力和听力都很差。2.remind v.提醒;使想起(1)remind sb to do sth提醒某人做某事He reminded me to write the letter.他提醒我写信。