高中英语 Unit 9 Wheels单元语法（二）—现在完成时和现在完成进行时学案（含解析）北师大版必修3-北师大版高一必修3英语学案

Unit 9 Wheels单元语法(二)——现在完成时和现在完成进行时[语法图解][语法感悟]单句语法填空1．Since I have_finished (finish) my homework, I can go to the cinema with you this evening.2 ． I have_been_meeting (meet) this young man many times on my way home lately, who is most likely to be our new neighbour.3．I have_known (know) Li Wei for ten years. Now he is one of my important business partners.4．We have_been_working (work) on this project for four hours. Let's have a rest.5 ． Now that she is retired, Lucy has_been_considering (consider) going travelling abroad, but she hasn't decided yet.一、基本用法1．现在完成时由“have/has＋过去分词”构成，表示过去所发生的动作或事情对现在造成的影响或结果。2．现在完成进行时由“have/has been＋现在分词”构成，表示某一动作在过去某一时间发生，一直延续到现在，有可能到此为止，也有可能继续下去。现在完成进行时是兼有现在完成时和现在进行时两者基本特点的时态。二、现在完成时与现在完成进行时的区别1．现在完成时所表示的动作到现在为止已经完成，或者在过去曾经发生过但对现在仍有影响；而现在完成进行时则表示动作在过去发生，但现在仍在继续，侧重未完成。I've dialed four times; I don't think anyone is in the office.我已经拨了四次电话了，我认为办公室里没人。I've been dialling; I don't think anyone is in the office.我一直在打电话，我认为办公室里没人。2．现在完成进行时可以表示动作的重复，而现在完成时一般不表示重复性。Have you been meeting him recently?你最近常和他见面吗？Have you met him recently?你最近见过他吗？3．现在完成进行时有时含有感情色彩，而现在完成时一般是平铺直叙。I have been waiting for you for two hours.我一直等了你两个小时。(可能表示不满)I have waited for you for two hours.我等了你两个小时。(说明一个事实)4．有些动词不能用于现在完成进行时，但可用于现在完成时。如：表示状态的动词 be, have, exist 等；表示感情的动词 like, love 等；表示感觉的动词 see, hear, know 等。He has had a cold for a week.他已经...