北京大现代远程教育 1.Function:功能 A动作的结果对现在有影响 e.g.Oh my,I've forgotten her name. B动作始于过去，一直延续到现在，或刚刚 结束。 She has worked in this company for 15 years. 她已经在这家公司工作了15年
1. Function:功能 A 动作的结果对现在有影响 e.g. Oh my, I’ve forgotten her name. B 动作始于过去，一直延续到现在，或刚刚 结束。 She has worked in this company for 15 years. 她已经在这家公司工作了15年
北京研彩大孝现代远程教育 ·2.结构 She has(not)left for two hours. Has she left for two hours? Yes,she has.No,she hasn't. ·How long has she left?
• 2. 结构 • She has (not) left for two hours. • Has she left for two hours? • Yes, she has. No, she hasn’t. • How long has she left?
侧北京托大现代远程教育」 Summary ·1.概念：过去发生或已经完成的动作 对现在造成的影响或结果，或从过去 已经开始，持续到现在的动作或状态
• Summary • 1.概念：过去发生或已经完成的动作 对现在造成的影响或结果，或从过去 已经开始，持续到现在的动作或状态
北京研彩大橐现代远程教育 ·2.时间状语：recently,. lately,since...for...,in the past few years,etc
• 2. 时间状语：recently, lately, since…for…,in the past few years, etc