外研社九年级上册module 2 public holidays unit 3 language in use.ppt

while 侧重于描述正在发生的状态，从句动词要用进行时。 1) They were playing football _____ they heard a cry. 2) Don’t make any noise _____ I am sleeping. before在...之前，主句动作发生在从句之前。 after在...之后，主句动作发生在从句之后。 Turn on the lights_____ you leave the classroom. * * * * make short speeches give thanks for … in the seventeenth century cross the Atlantic how to grow corn the following year lay the table once a year as well enjoy oneself 作简短的演讲 为…感恩 在17世纪 横渡大西洋 如何种玉米 第二年； 翌年 摆放餐具 一年一次 也 过得快乐; 玩得高兴 Translate the phrases into English. before when while as soon as 一...就，表示主句动作紧接著从句发生 until 直到...表示一个动作一直持续到某个时刻， 主句谓语动词是延续性动词时，用肯定形式；主句谓语动词是短暂性动词时，用否定形式，即not...until，意为:直到...才 Ill wait here until she comes. You cant go out until you finish your homework. _______ we’re staying with our friends, we’re going to spend one day in Qingdao. 2. _______ we begin dinner, my father gives thanks for the food. 3. ____________ it is all over, everyone helps wash the dishes. Before While When/After 4. And my family always go somewhere interesting ___________ the holiday begins. 5. We have celebrated the festival ______ the first pioneers from England arrived in America. 6. _____ they landed, their first winter was worse than any English winter. since as soon as After Complete the conversation. Choose the correct phrases. a) after the food has all gone b) as soon as you’re ready c) before there are too many people d)before we go e) when we get back f)while we’re waiting for the New Year B: When are we going to the party? D: We’re waiting for you. We can go ______. B: OK, let’s go. It’s better to be early and get there ___________. D: Yes, we on’t want to get there ______________.