1、assign的近义词是 give, 反义词是come down on。
2、assign释义：
v.指派(任务)；给予。
例句：Assign a different colour to each different type of information.
give释义：
v.交给；赠送；提供；捐助；用于…；使…受惩罚；传染疾病；举办使产生。
n.延展性。
例句：He gave money to the World Health Organisation to help defeat smallpox...
come down on释义：
v.惩罚；索取；处罚；批评。
例句：The revenue authorities have come down on me for the payment of twenty pounds income tax.
