如何使用define-key将一个按键在特定模式绑定到函数上

[KGS]

(define-key evil-normal-state-map (kbd "a") '(lambda () (evil-emacs-state) (forward-char))) 类似于这样的语句，但是这段语句时报错的

[jixiuf]

@KGS

(define-key evil-normal-state-map (kbd "a") '(lambda () (evil-emacs-state) (forward-char)))

(define-key global-map (kbd "a")
            '(lambda ()(interactive) (evil-emacs-state) (forward-char)))