一、Learning aims and demands:
1.To summarise and consolidate the use of present perfect tense:
Have you… yet?
I have already…
I haven’t … yet. (重点)
2.To consolidate expressions and vocabulary.
3.Affection: We should love science and our country .
二、单词填空：
1.My sister is ill and she couldn’t e____________ walk.
2.How many times have you been to Beijing?
T___________.
