英语口语指导:introduce sb to sb

　　152 increase 增加

　　eg : They've increased the prece of petrol by 3% 他们把石油价增加了3%

　　the population has increased from 12 million ten years ago to 18 million now

　　153 instead of +(名 ) 代替

　　eg: I'd like an apple instead of a pear 我想要苹果，而不要梨子

　　I like English instead of math 我喜欢英语而不喜欢数学

　　154 introduce sb to sb 介绍某人给某人 introduce oneself 自我介绍

　　155 invite sb to do sth 邀请某人做某事

　　156 It takes sb sometime to do sth 做某人花掉某人多少时间

　　eg : It took me 5 minutes to do my homework It takes me half an hour to cook