译林版八年级英语下册Unit1知识点总结复习归类

a. It is the first / second/… time that+从句（从句用现在完成时）

It is the first time that she has visited the city. 这是她第一次参观这座城市。 b.This is the +形容词最高级+名词 that +从句（从句用现在完成时） This is the best film that I’ve (ever) seen. 这是我曾看过的最好电影。

I must say that it's the best model I have ever seen. 这是我玩过的最有趣的游戏。 c. It’s +一段时间+since从句(或It has been +一段时间+since从句). 自从某事发生已有一段时间了。

It is /has been two years since my brother joined the army. It’s over twenty years since we last met. It’s a long time since our last vacation. 6.现在完成时与一般过去时的区别

现在完成时与一般过去时都表示“动作已经发生”，但不同点在于： 现在完成时强调这一动作与现在的关系，即对现在产生的结果、影响等， 而一般过去时只表示过去的事实，不表示和现在的关系。 He has learned French for three years.他学法语已经三年了。 He learned French for three years.他曾经学过三年法语。

Who has taken my bag? I couldn’t find it.谁拿走了我的包？我找不到了？ He cleaned the house yesterday.他昨天打扫过房间。

The room is clean, for he has cleaned it already.房间很干净，因为他已经打扫过了。 现在完成时不可与表示过去的时间副词连用，而一般过去时则可以。 He has done some washing.

He did some washing yesterday. 他昨天洗衣服了。

Integrated skills&Study skills&Task

1. Starlight Town has changed a lot over the years.星光镇在过去几年中变化很大。 =There have been great changes in Starlight Town. =Great changes have taken place in Starlight Town. （1）① change vt. 变化，改变 Where did you change your plane? ① change cn. 变化，改变

Great changes have taken place since 1976. ①change un. 零钱

Here is your change.

（2）over the years “历年；多年来；多年以来” 相当于during the years，常与现在完成时连用。

在过去的五年里 over/during/in the last/past five years 例：This village _hasn’t changed_ (not change) over the years. 2. We mainly communicate by email. 我们主要通过电子邮件交流。 ①communicate vt. 传达（新闻，意见，感情等） The little boy can’t communicate his ideas clearly. ①communicate vi. 交流；沟通；通讯 communicate with sb. 和某人沟通交流 He had no way to communicate with his brother. ①communication n. 交流；沟通；通讯

3. It’s nice to have open space and pretty gardens. 有露天的空间和漂亮的花园真好。 open的用法

open space意为“露天的空间、空地”。其中open是形容词，意为“未围上的；开阔的”。 Children like to run around in the open fields. 孩子们喜欢在广阔的田野上追逐玩耍。 open作形容词，还可以表示“开着的”；反义词是closed，意为“关着的”。 The door is open now. 门现在是开着的。

open还可以作动词，意为“开，打开”；反义词是close，意为“关，关闭”。 Please open the window. 请把窗户打开。 It is good to open all the windows and air the rooms. 打开所有窗户，给房间通通风是有益的。

4. A river runs through the center of town.一条河横穿镇中心。 辨析：across & through

1)across横穿，与十字路口形成十字，而through指在立体空间中的穿过。 go through the forest 穿过森林 go across the street 穿过大街 2)through表示贯通，直穿，透过，穿过，即从一边贯穿到另一边。 The river runs through our city. 3)across 表示横穿，横过，横渡，横跨

I swam across the Changjiang River 20 years ago.