Are we good?=你理解了吗？
例句:- Are we good? 你明白(我的意思)吗?- Yeah, absolutely! 是的，当然理解!

如果你和别人闹不愉快，他对你说Are we good? 是在问你"我们和好了吗？"(还生气不?)
Are we good=我们和好了吧?(表生气了嘛~~)
例句:Are we good? Are you still angry with me?我们和好了吗?你还生我的气吗?

Good sense＝判断力强
例句:She showed a lot of good sense.她表现出惊人的判断力.

Good opinion=好感(只是觉得人不错~)
例句:I have a good opinion to him.我觉得他人还不错.
更高级的表达:
favorable impression=好感.好印象(可用于表白)
例句:Although he left a favorable impression on me, I still refused to date him.虽然他表示对我有好感，我还是拒绝了。

Good time是"好时间"?
~~当然不是啦~~场景一如果人家说 Is this a good time to talk to you? 就是在说：这个时间和你谈话合适吗? good在这里表示"合适的，方便的"。

good time=合适的时间、方便的时间
例句:When would be a good time to phone?什么时间打电话合适呢？
Have a good time. 玩的愉快!