1、本网站免费注册后即可以下载，点击开通VIP会员可无限免费下载！
2、资料一般为word或PPT文档。建议使用IE9以上浏览器或360、谷歌、火狐浏览器浏览本站。
3、有任何下载问题，请联系微信客服。
扫描下方二维码，添加微信客服
《Grammar》PPT课件优质课下载
3. It’s been six years since we last saw each other.
4. This is the first time I’ve visited your hometown.
5.They’ve put up a lot of high-rising
buildings recently.
Are you familiar with these sentences?
Do you kown their tense?
Have a look
Brain Storming
Can you write the time expressions of Present perfect tense and the Past tense.The more you write down, the higher score you will get.
Past tense time expressions:
yesterday,last night, (week, month, year…)a few days ago, five years ago, …ago,in 1974, in the 1920s,the other day, in the past
present perfect tense time expressions:
Recently,since,so far,up to now,till now,just,these days, this year.
(一) 现在完成时的基本结构：
肯定句：
主语 + have / has + 过去分词 + 其他
否定句：
主语+haven’t /hasn’t+过去分词+其他
一般疑问句：
Have/Has + 主语 + 过去分词 + …？
肯定答语：Yes, 主格代词 + have/has.
否定答语：No, 主格代词 + haven’t/hasn’t.
(二) 现在完成时的基本用法：
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或结果。可以表示最近完成的动作，也可以表示经历或经验。经常译为“……过”。常与just, recently, so far, up to now, till now, in the past, ever, never等词连用。
They have put up a lot of high-rise buildings recently.