(10) I _h_a_v_e_b_e_e_n__w_r_it_in_g_(write)this letter for an hour, but I haven’t
finished it.
标示词: 1) for + 时间段,since + 时间点
2)recently, just, already, yet, ever, never, up to now; till now; so far, these days
Flexible Tenses
( 灵动的时态)
Warming up
feed my fish (喂鱼) feed (fed , fed)
1. What do you do every day?
I feed my fish every day.
2. What did you do yesterday? I fed my fish yesterday.
I was feeding my fish before I started this quiz.
时态再认识: What tenses are they?
1.What do you do every day?
2.What did you do yesterday?
3.What will you do tomorrow?
feed my fish feed (fed , fed) 3. What will you do tomorrow? I will feed my fish tomorrow.
4.What are you doing right now? I am feeding my fish right now.
五、现在完成时和完成进行时