The humidity was becoming unbearable.

　　這種潮濕使人越來(lái)越難以忍受了。

　　His memory was becoming shockingly bad.

　　他的記憶力正變得很糟。

　　Mother was becoming too frail to live alone.

　　母親已逐漸衰弱到無(wú)法獨(dú)居。