学习目标：
词汇: 课本P123（ P40-P41）的单词
词组：have on idea, look like, remote control, turn on, change the channel, search for information, send and receive e-mails, use sth. to do…, write computer programmes, word processing
知识点：
1. I usually use it to search for information.
search for sth/ search sth 的区别
