周末打电脑游戏用英语可以说成 "play computer games on the weekend"。
"Play" 是英语中的动词，意思是“玩”；
"computer games" 是名词短语，意思是“电脑游戏”；
"on the weekend" 是介词短语，意思是“在周末”。
例句：
I pke to play computer games on the weekend. (我喜欢周末玩电脑游戏。)
He spends his weekend playing computer games. (他周末花时间玩电脑游戏。)
She doesn't have time to play computer games on the weekend because she has to study. (她周末没时间玩电脑游戏，因为她要学习。)