Hệ thống toàn bộ kiến thức tiếng anh bằng Slide, dễ nhìn, dễ hiểu, dễ học thuộc Mệnh đề trạng ngữ thời gian AFTER The ship was checked carefully after she had been built. AS They left as the bell rang. AS SOON AS They will get married as soon as they finish university. BEFORE Dont count your chickens before they are hatchd. AS LONG AS I will lend you some money as long as you promise to pay me back. UNTIL People do not know the value of health until they lose it. WHEN When you visit this country, you should bring thick winter clothes. WHILE When you rang, I was cleaning my bike