英語四級經典必背500句：聽力口語關鍵句71 　　71 .When will you be through with your work, John? 　　四級詞匯講解: 　　本句中，be through 意為 已結束 。本句相當于When will you finish your work? 　　英語四級考點歸納： 　　與through有關的短語還有:through and through，get through，see through等。through本身的含義包括: 　　穿過;貫穿 。如: 　　You can see the three people through the mist.透過薄霧，你能看見那三個人。 　　自始至終 。如: 　　He will not live through tonight.他活不過今晚了。 　　因為，憑借 。如: 　　It was through you that we were able to meet again.全仗你的幫助，我們才能重聚。