A) in high spirits 兴高采烈,情绪极高
A) airs put on airs装腔作势,摆架子
C)of much use = very useful
前两个是习惯用语,需记忆.第3个是常用结构,of+N,相当于相应的形容词,又如:of great importance=very important
A) in high spirits 兴高采烈,情绪极高
A) airs put on airs装腔作势,摆架子
C)of much use = very useful
前两个是习惯用语,需记忆.第3个是常用结构,of+N,相当于相应的形容词,又如:of great importance=very important