第01讲 现在完成时（一）-【暑假自学课】2023年新九年级英语暑假精品课（仁爱科普版）

第01讲 现在完成时（1） 现在完成时（一） 现在完成时表示过去发生的动作对现在造成的影响或结果，也可以表示从过去某一时间开始，一直持续到现在的动作或状态。常与already（已经），just（刚刚），ever（曾经），never（从不），before（以前），yet（仍然）等连用。 考点1 现在完成时的结构 肯定句 主语＋have/has＋动词的过去分词＋其他. I have already finished my homework. 我已经完成了我的作业。 否定句 主语＋have/has＋not＋动词的过去分词＋其他. I have not heard from him yet. 我还没收到他的来信。 一般疑问句和简略回答 Have/Has＋主语＋动词的过去分词＋其他？ Yes，主语＋have/has. No，主语＋have/has not. —Have you ever been to Beijing？ 你曾去过北京吗？ —Yes，I have.是的，我去过。/ No，I haven't.不，我没去过。 注意： have not 常简略为haven't，has not 常简略为hasn't。 考点2 already与yet在现在完成时中的用法 already adv.已经；早已 通常用于肯定句中，一般用于have/has后，实义动词前，也有放在句尾的情况。 I have already had breakfast.我已经吃过早饭了。 yet adv.还；已经 用于否定句和疑问句中，一般用在句末。 I haven't done my homework yet. 我还没有做作业。 —Has your sister finished reading 　　　　？ —Yes. She has 　　　　 finished it. A. yet； yet　 B. yet； already　 C. already； yet 【答案】B 【解析】本题用语法判定法。already常用于肯定陈述句中，yet多用于否定句或疑问句中。 一、单项选择 1．Scientists have always ________ the question many times. A．asks B．asking C．asked D．ask 2．I have ________ lots of writing competitions already. A．entered B．enters C．entering D．to entered 3．Jenny is very happy because she ________ her driving test. A．passed B．will pass C．has passed D．is passing 4．— High-speed trains, mobile payment, sharing bikes and online shopping are called “four new great inventions” of modern China.    — They ________ our daily lives more convenient. A．have made B．will make C．made D．makes 5．—Have you _________ any activities to help children? —Sure. I did it last year. A．take part in B．join C．taken part in D．joined 6．________ he _________ from his uncle yet? A．Does; hear B．Have; heard C．Has; heard D．Did; hear 7．Luna has ________ in bed for two hours after ________ the book on the desk next to her bed. A．lied, lying B．lay, lain C．laid, lying D．lain, laying 8．—Tom, why are you looking around? —Mr. Black, I ________ my paper. Can I hand it in now? A．finish B．have finished C．will finish D．am finishing 9．Mike ______ more than 800 people in the last two years. A．is