初中语法现在完成时专题讲解（共15张PPT）

现在完成时 现在完成时结构 have /has+v 过去分词 助动词 否定 疑问 haven’t hasn’t Have you……? Has he……? Practice 我已经完成作业了。 I have finished my homework. He has finished his homework. Has he haven’t No ,he hasn’t. Yes, he has. ? 现在完成时的两种基本用法 1.表示过去发生或已经完成的动作对现在 造成的结果或影响。 标志词： already, yet, just, ever, never, before等 e.g. –Have you had your lunch yet? –Yes, I have. I’ve just had it. (现在我不饿了。) 1. — China develops so fast. — That’s true. It _____ a lot already. A. changes B. changed C. will change D. has changed 2. --- _____ you ever _____ the history museum, Paul. --- No, I haven’t. A. Do, visit      B. Did, visit     C. Have, visited       D. Have, visit 实战中考 3. — I’d like to introduce my best friend to you, Peter. — Thank you, Lucy. But we _______ already. A. meet B. met C. will meet D. have me