Unit 3 Online tours Welcome to the unit预习检测与导入学习目标1.知识目标:学习词汇:programme, keyboard, unit, mouse, screen, receive, online, channel, television学习词组:look like, remote control, change the channel, main unit, search for information, send and receive e-mails学习句子:What do you use your computer for?I usually use it to search for information.How often do you use your com..