GbEng
你讲到一半就停下来不讲,太没意思了。 It's not nice of you to stop in the middle of what you are saying.
这次聚会一定没意思--咱们想个法子别去了. It's bound to be a boring party let's try to wangle out of it/going.
他这个人很没意思, 在聚会上我总是对他退避三舍. He's so boring that I always try to give him a wide berth at parties.