e busy doing sth be worth doing sth be well worth doing sth be worthy of being done be wothwhile to do /doing sth be good at doing be bad/good for doing be afraid of doing 下面这些是【be+形容词+介词to+doing】结构： be accustomed to 习惯于 be blind to 对……视而不见 be close to 靠近,接近 be devoted to 献身,专注于 be harmful to 对……有危害 be open to 对……开放,易受到 be opposed to 反对,不赞成 be related to 与……有关（是亲戚） be respectful to 尊敬 be used to 习惯
