13. We need to bath the cat every day.
我们每天都要给小猫洗澡。
还能这样说：
The cat should have a bath every day.
The cat needs bathing every day.
应用解析：
Go to bath! 滚开！见鬼去！
14. Keeping a pet is in now.
现在很流行养宠物。
还能这样说：
It is fashionable to keep a pet.
It's in fashion to keep a pet.
应用解析：
pet subject 爱讲的话题；
in a pet 发脾气，生气；
pet phrase 口头禅；
pet peeve 不能忍受的事
15. How lovely a dog!
好可爱的小狗！
还能这样说：
What a cute dog!
What a love of a dog!
谚语：
Fight dog, fight bear.
打个青红皂白，一决雌雄。
16. Can you imagine keeping a tiger as a pet?
你能想象把老虎当宠物养吗？
还能这样说：
Can you assume the thing of keeping a tiger pet?
Could you fancy a tiger as a pet?
应用解析：
tiger sweat 威士忌酒；
work like a tiger 生龙活虎地工作；
three cheers and a tiger 三声欢呼一声吼
17. To play with my pet is a lot of fun.
和宠物玩很有趣。
还能这样说：
It's interesting to play with my pet.
It's great fun to play with my pet.
应用解析：
as good as a play （像戏剧那样）有趣的；
play for money 赌钱；
play the host 做主人；
an oil play 石油企业