9A-Unit4-Growing-up-Grammar(共35张).pptVIP

He did not get the chance to be world-famous until he joined the NBA. He practiced playing basketball very hard until/till 2011. Then he ended his basketball career(事业). Grammar B (Using since, till, until) Tip6 : 1.Until and till mean up to a certain time. 2.Until can be placed or the sentence, but till is usually used the sentence. at the beginning in the middle of in the middle of till和until意思是 “到……为止” ，一般情况下两者可以互换。until可以放在句首或句中，而till不可以用在句首。 注意：如果主句中的谓语动词是瞬时动词时，必须用否定形式，即“not…until”结构，意思是“直到……才（开始）”。如： Walk till/until you see a white house. 一直走到你看到一座白房子为止。 I did not go to bed until I finished my homework. 直到做完作业我才上床睡觉。 注：当我们使用not… until 结构时，不能使用till代替until 句首通常只用until,不用till。例如： 1). Until then, I knew nothing at all about it. 在那之前，我对此事一无所知。 2). Until you told me I had no idea of it. 在你告诉我之前，我对此一无所知。 某些固定词组或谚语中通常只用till。例如： 1). from morning till night 从早到晚。 2). up till now 直到现在 中考链接 1. — Have you been in Nanjing for a long time? — Yeah. _______ my parents came here. (2014 南京) A. For B. As C. When D. Since 2. Tigers wait ___ it is dark, then go out to find their food. (2012徐州) A. since B. until C. as D. because I ____go to bed _______ I finished my homework last night. A. /, until B. not , until C. didn’t, until D. /, till until在肯定句中，主句的谓语动词通常是________动词。 until在否定句中，主句的谓语动词通常是________动词。 延续性 短暂性 B1.Practise: Fill in the blanks with since, till or until. 1.I have been crazy about playing basketball_______ I was a little boy. 2.The weather has been awful this week. The rain did not stop_____ yesterday evening. 3.We played basketball in the playground this afternoon__________ it was getting dark. 4.It is the first time we have played basketball ______Monday. We enjoyed ourselves very much. 5.I waited for 20 minutes at the bus