"He often cooks" 英语可以说成 "He frequently prepares meals" 或 "He is a frequent cook".
"Frequent" 是 "often" 的同义词，表示 "happening or done many times, or more often than usual"。
"Prepare" 是 "做" 的意思，"meals" 是 "饭菜" 的意思。
例句：
He frequently prepares meals for his family.
(他经常为他的家人做饭。)
He is a frequent cook, always experimenting with new recipes.
(他是一个经常做饭的人，总是在尝试新的食谱。)