【最新】八年级英上册 Unit 2 My Favourite School Subject Lesson 16 课件 冀教版 课件Present Perfect Tense( 现在完成时): 结构：助动词 have/has + p.p.( 过去分词) 用法：1.表示过去发生或已经完成的某一动作对现在造 成的影响和结果。 I have finished my homework. 2.表示过去已经开始，持续到现在的动作或状态 ， 经常和表示从过去某一时刻延续到现在（包括 “现在”在内）的一段时间的状语连用。 She has lived in Beihai for 20 years. I have been at this school for 13 years. He has taught us since( 自从) last year. 【最新】八年级英上册 Unit 2 My Favourite School Subject Lesson 16 课件 冀教版 课件She has taught us a lot. She hasnt taught us a lot. Has she ta
