用法:
1 liking to be with other people 爱交际的.

用法:
2 (biology 生) (ofanimals, birds, etc) living in groups or communities （指动物、 鸟等）群居的、 共生的.

• be engaged in doing sth(be engaged to do sth)
• be familiar to(be familiar with)
• be flush of(be flush with)
• be fortunate in(be fortunate with)
• be friendly to(be friendly with)
• be friends with(be friendly with)
• be furious about/at(be furious with)
• be generous to(be generous with)
• be glad about of(be glad at)
• be going to(shall, will)
• be gone(have gone)
• be good at(be good for)
• be grounded in(be grounded on)
• be hard at(be hard on)
• be home(be at home)
• be hopping mad(be raving mad)
• be ill(be sick)
• be inferior than(be inferior to)
• be interested in doing sth(be interested to do sth)
• be jealous for(be jealous of)
• be liable for(be liable to)
• be limited to do sth(be limited to doing sth)
• be lost on(be lost to)
• be made from(be made of)
• be mistaken about(be mistaken for)