had a good time用法
表示“玩的很開心，玩的很快樂，過得愉快， 玩得痛快”
We can just hang out and have a good time.
我們可以只是閑逛一下，開開心。
2.用于have a good time (in) doing sth，表示“做某事很開心”。如：
You'll have a good time enjoying Beijing and the olympics.
你在北京和奧運會期間將度過一段愉快的時光。
小結
It's time for +名詞、名詞短語、動名詞（動詞ing形式）
It's time + to動詞、動詞短語
It's time that + 過去時的從句。（前期文章有所介紹）
例句
They have a good time together.
他們一起過得很愉快。
We'll have a good time.
我們會玩得很開心的。
But did we have a good time here?
我們在這度過了一段美好的時光不是嗎?
You can have a good time.
你能玩的很高興。
Would I have a good time?
我會玩得愉快嗎？