请问dog在英文中的不同用法及意思????thank you

dog可数名词 n.[C] 狗
animal that you keep as a pet or on a farm
· His dog,which was very old, became ill and died.
他的狗现已很老，生病死了。
· a hunting (sporting) dog
猎犬
· a mad dog
狂犬
· a police dog
警犬
· an ownerless (a homeless) dog
野狗
· dog days
三伏天
· dog house
狗窝

可数名词 n.[C] 家伙；人
a fellow
· He is a sly dog.
他是一个狡猾的人。

dog:

n. 狗,卑鄙的人
v. 尾随,跟踪

例句与用法:
1. Love me, love my dog.
爱屋及乌。

2. Every dog has his day.
人人皆有得意时。

3. He is a lucky dog.
他是个幸运的家伙。

4. The farmer has a shepherd dog.
农夫有一条牧羊犬。

5. He's a vile dog!
他是个无耻之徒!

6. He hasn't a dog's chance of passing the exam.
他这次考试毫无及格的可能.

7. I won 10 on the dogs.
我赛狗赢了10英镑.

8. He's made a real dog's b