hashad是什么時(shí)態(tài)

has had是現(xiàn)在完成時(shí)。
例句：
Our dog has had puppies twice already.
我們的狗已經(jīng)生了兩次小狗了。
Our dog has had three litters of puppies.
我們的狗已經(jīng)生了三窩小狗。