精讲点拨
1. tiring a. 令人劳累的, 厌烦的 (修饰物) tired adj. 疲劳,累 (修饰人)
Running is _________. I don’t like it. After a long walk, I got quite ________ .
2. once or twice 一两次，偶尔
他朝窗外看了一两次。___________________________________
3.What….for?为了什么？
What do you study for? --We study ___the motherland.
4. when… = and at that time 那时，当时
1）. My brother fell when he____ (ride) his bicycle
