overlook,neglect,ignore都有忽略、忽視的意思.
（1）ignore v.忽視,不理睬,指有意識(shí)地拒絕.
She saw him coming but she ignored him.她看見他走過來,但是裝作沒看見.
（2）neglect v.忽視,忽略,疏忽,指無(wú)意識(shí)地忽視或忘記.
He neglected to make repairs in his house.他忘記了修理房子.
（3）overlook v.忽略,疏漏,指有意識(shí)地遺漏,也可以指無(wú)意識(shí)地忽略.
The mother overlooked her little boy's bad behavior.那位母親忽視了她的小兒子的不良行為.