微课课件Unit1Topic3SectionA.ppt

Since / For的区别：印江县朗溪镇初级中学印江县朗溪镇初级中学 严俊严俊You have been in New York for a long time.for a long timecame to New Yorkpresentpastsb. have/ has been in. 某人一某人一直在直在e.g. I have been in the new school for a week.for a weeklast weekpresentpastfor + 时间段时间段., but the city has improved a lot since I came here a few years ago.since I came here a few years ago came herepresentpastsince +从句从句（从句谓语动词用过去式）（从句谓语动词用过去式）e.g. She works in the school since 1995. since 1995lived presentpastsince +时间点时间点e.g. He has waited for Tom since two hours ago.since two hours ago8:00presentpastsince + 时间段时间段+ago10:00Complete the sentences with since or for.1. You have been in New York _ a long time.2. The city has improved a lot _ I came here a few years ago.forsinceI have worked in the school for three years . =I have worked in the school since three years ago . =I have worked in the school since 2011. =I have worked here since I came to the school . for+时间段时间段since+时间段时间段+agosince+时间点时间点since+从句从句3 Look carefully and think about the differences between since and for in 1a. Then complete the sentences with since or for and listen and check.1.I have lived in Beijing _ three years. _2011. 2. He has waited for Tom _ two hours ago. _ two hours. 3. We have learned chemistry _ one month. _ the new term began. forforforsincesincesince n.化学化学n.学期学期Fill in the blanks with for or since.1. His father has been dead _ he was ten years old.2. Michael has been away from the army _ six years.3. He has been in Chongqing _2003.4. My brother has had a car _ two months.5. Tom has kept a book _ 5:00 a.m.sinceforsinceforsinceThank You!