八下unit8知识点归纳
语法:现在完成时(一)
用法: 表示过去发生或已经完成的动作，对现在造成的影响或结果。

构成:主语+have/has+过去分词
标志词: already, yet, never, ever, just, before, so far等
eg: I have already taught him some English.
Tom has never been to the space museum.
I have seen him before.
疑问句:把have/has 提前
eg: Have you taught him any English yet?
Has Tom ever been to the space museum?
否定句:在have/has后加not
eg: I haven't told him any English yet.
I haven't seen him before.
注: already常用于陈述句中，yet常用于一般疑问句和否定句中。

知识点:
1. an island 一座岛
2. full of... 满是...的
eg: The bag is full of apples.
3. page one=the first page 第1页
4. hurry up 赶快, 急忙
5. the mark of... ...的痕迹, 印记
eg: Follow the mark of the feet, then you will find it.
6. French n. 法语France n. 法国
7. success n. 成功successful adj. 成功的
8. belong to... 属于...
eg: This book belongs to me.
9. one another= each other 互相
10. beauty n. 美丽beautiful adj. 美丽的
eg: I like the beauty of nature.
She is a beautiful girl.
11. millions of 上百万的... two million 二百万
12. introduce ...to... 介绍
eg: Let me introduce myself to you.。