Answers

2014-02-12T15:55:20+01:00
Her childish behaviour is really annoying; she should act more like a grown-up woman.
Claire is full of chlidlike enthusiasm; she is always excited about new challenges.

Usually childish mean s something negative and childlike-positive or neutral.
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2014-02-12T23:49:29+01:00
Sarah was childish in the matter meaning Sarah was immature in the matter 
She speaks in a childlike manner meaning she speak like a child 
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