Her strange behaviour was passed remarks about.

她奇怪的行为遭到了议论。

His strange behaviour upset his father.

他的奇怪行为使他父亲很心烦。

This will cause strange behaviour in some cases.

在某种情况下可能会导致一些奇怪的现象。

His strange behaviour sometimes verges on madness.

他那古怪的举止有时近乎疯狂。

I could adduce several reasons for his strange behaviour.

对他的奇怪行为,我能提出几点原因.