《2025年优化探究同步导学案高中英语必修第一册人教版》

3. focus vi. & vt. 集中(注意力、精力等);(使)调节焦距 n. 中心;重点;焦点
[教材原文] But spending too much time online is unhealthy
and makes it very difficult to focus on other things in life. 但是
花费过多的时间在网络上是不健康的,也会让你们很难把
精力放在生活中的其他事情上。
(1) While rock - climbing, you need to remain very focused
(focus) so that you won't make any dangerous errors.
(2) 当你第一次读这篇文章时,你最好把注意力集中在抓住主旨上,而不是单词或语法上。
It is better to focus on getting the main idea not on single words or grammar when you first read the article.
(3) 他成了全班的焦点,紧张得脸都红了。(读后续写之情绪描写)
He became the focus of the whole class and he was so nervous that his face turned red.
· focus (one's attention/energy) on/upon 集中(注意力/精力)于;聚焦(……)于
focus on 全神贯注于;集中于……
· the focus of... ……的焦点/中心

答案： 3.
(1)focused
(2)to focus on getting the main idea
(3)the focus of the whole class

4. it 作形式宾语
[教材原文] But spending too much time online is unhealthy
and makes it very difficult to focus on other things in life. 但
是花费过多的时间在网络上是不健康的,也会让你们很难
把精力放在生活中的其他事情上。
(1) 你的建议使我轻松地克服了这个挑战。因此,我怎么感谢你都不为过。
Your advice made it easy for me to overcome the challenge
. So I can't thank you enough.
(2) 我们认为在这次重要的比赛中失败真遗憾。
We thought that/considered/believed it a pity that we failed in the important competition.
(3) 专家认为不理解的朗读没有用处,所以我们最好尽量理解材料的内容。
The expert considers it no good reading without understanding, so we'd better try our best to understand the content of the material.
· 句中 it 是形式宾语,不定式短语是真正的宾语,而 very difficult 是形容词短语作宾语补足语。可作宾语补足语的还有名词、代词、现在分词、不定式、过去分词、介词短语等。
· 真正宾语的三种形式:动词不定式(短语),动词 - ing 形式(短语)及宾语从句。
· 可用 it 作形式宾语的常见动词有 find、consider、make、believe、think、feel 等。

答案： 4.
(1)made it easy for me to overcome the challenge
(2)thought that/considered/believed it a pity that
(3)reading without understanding

5. it is because...
[教材原文] I guess it's because they're adults and can't
understand me. 我猜测那是因为他们是成年人,不能理解我。
(1) 她说:“我放弃的原因是我看不到我将要到达的地方。”
She said, “The reason why I gave up is that I could
not see the place which I was going to reach completely.”
(2) 我珍惜这本书。这是因为它告诉我如何保持友谊的平衡。
I value this book. This is because it shows me how to keep the balance of friendship.
→This book shows me how to keep the balance of friendship. This is why I value it. (this is why)
→The reason why I value this book is that it shows me how to keep the balance of friendship. (the reason why... is that...)
此句中 because 引导的是表语从句,其用法如下:
This/That/It is because... 这/那是因为……
This/That is why... 这/那就是……的原因
The reason why... is that... ……的原因是……

答案： 5.
(1)The reason why is that
(2)This is because This is why I value it The reason why I value this book is that it shows me