注意下列四种形式的用法： open 可作形容词与可作动词 opened是动词OPEN的过去式, close作动词, closed 作形容词或动词CLOSE 的过去式,如 He opens the window evey morning.他每天早上打开窗. His window is open evey day.他的窗每天是开着的. He opened the door just now .刚才他把门打开了. He closed the window just now.刚才他把窗关上了. The window is closed .这窗是关闭的.
