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worth 本身就是形容词,而且是表语形容词,所以,worth后面不能再加y,但其前面必须加联系动词.
sth be worth doing某事值得做,值得做某事
It is worth my doing.
注意：worth后面只能接动名词,或动名词短语,且这个动名词与句子的主语能够形成逻辑上的“动宾”关系.
例：This picture is worth buying.
Buying this picture is worth.