基础检测
—、1、have；had；had
2、Has；finished；is；doing
3、Have；arrived；are
4、has taught
5、have never visited
6、haven't heard
7、has drawn
8、has vvorked；left
二、1、yet 2、ever 3、for 4、just
5、already
三、1-4：D B D A 5-8：D C C B
四、1、have worked
2、Has；turned；has
3、Have；cooked；haven't
4、hasn't；yet
5、haven't told
6、How long
技能提升
1、过去，人们旅行不是为了乐趣，而是为了找到新的地方过更好的生活。
2、animals，travel/journey
3、They travel on foot.／They walk from one place to another.
4、We have got all kinds ofirnproved，better，and safer forms of transport.
5、Great changes have taken place in travel.