Unit 3 - 4
Study aim: Grasp the following words and sentence structure and remember how to use them.
Study guide: Read the new words and fill in the blanks in about 20 minutes.
Study test: Finish the exercise given.
☆重点句型☆
1. as well as 的用法
2. Is anybody seeing you off? 进行时表将来
3. unless引导条件状语从句，相当于if... not
4. It didn't take long before the building was destroyed. before的用法
5. normal, separate 与strike的用法
重点及难点：
1. Before she could move，she heard a loud noise. 她还没有来得及动弹，就听见很响的声音。
该句中的before用作连词，后接时间状语从句, 表示“在……之前”。但在不同的语境中，往往有比较灵活的译法。
(1)表示主句的动作或时间持续了一段时间从句的动作才发生
We had sailed four days before we finally saw the land .我们一直航行了四天才看见陆地。
(2) 还没来得及……一个动作就发生了
Before I could say thanks to him , he had left in a hurry.我还没来的及向他表示，他就匆忙离开了。
(3) 趁还没怎么样 去做一个动作
Before you forget it , write it down. 趁你还没忘记赶快把它记下。
注意以下几种句型：
(1) It will be +一段时间+before 从句 再过一段时间才能怎么样
It will be 5 years before we meet again.再过5年我们才能再次相见。
(2) It won’t +before 从句 过了不久某个事情就发生了
It won’t be long before we meet again. 再过不久我们就能再次相见了
(3) It was +一段时间+before 从句 过了一段时间某事发生了
He went abroad in 1998. It was 5 years before he returned .1998年他出国。5年后他回国了。
(4) It wasn’t long +一段时间+before 从句 过了不久某个事情就发生了
He went abroad in 1998. It wasn’t long before he returned .1998年他出国了。不久他回国了。
2. normal adj. 正常的；正规的
与regular, common, usual的区别：
(1) regular 规则的；有规律的 common普通的；常见的 usual 惯常的；惯例的ordinary 平凡的；普通的
练习：keep _____________ hours the _______________ temperature
Tom is a ____________ name in Britain. It's __________with him to go to the office on foot.
in ______________ dress have a _____________ interest 有着共同爱好
3. Eco-travel is a way to find out what can be done to help animals and plants as well as people. 生态游可以找到既帮助别人．又帮助动植物的途径。
(1) well是副词，意思是“好，优秀”，as well as是形容词 同级比较结构。
如：She sings as well as Naying. He plays as well as, if not better than, Jack.
(2) as well as连接两个并列成分作主语时，句子的谓语动词应该与前面那个名词或代词的人称或数保持一致。如：Tom, as well as his classmates, likes playing football.
(3) as well，是副词短语，意思是“也”，相当于“too / also”常位于句尾，与too位置相当。
如： He is a professor and writer as well .
(4) may / might as well do sth 表示“还是……的好”。 It is going to rain; you may as well stay at home.
4. You shouldn't go rafting unless you know how to swim, and you should always wear a life jacket. 除非你会游泳，而且要一直穿着救生衣，否则就不应该去做漂流运动。
unless引导的条件状语从句，一般可以与if...not...互换。例如：
We’ll go for a picnic this weekend unless it rains.=We’ll go for a picnic if it does not rain.
I won’t attend the party unless invited=(if not invited).
5. 现在进行时的用法(is / am / are + doing)
(1) 表示现在(说话的瞬间)正在进行或发生的动作。
Look! The monkey is climbing the banana tree.
(2) 表示当前一段时间内的活动或现阶段正在进行的动作。(说话时动作不一定正在进行。)
We are preparing for the meeting to be held next Friday now.
(3) 表示说话人现在对主语的行为表示赞叹、惊讶、厌恶等。(常与always, constantly, continually, all the time, forever 等副词连用)，表反复的动作。
He is always thinking of others. (表赞许) She is always asking the same question. (表厌恶)
You are always changing your mind. (表抱怨)
(4) 表示在最近计划或安排要进行的动作。常用于go, come, leave, start, arrive, return, work, stay 等表移动、方向的动词。
He is starting the work in a few minutes. / He is leaving for Beijing tomorrow morning.
5. separate v. 分隔，分离 （常与from连用） adj. 分开的，独立的，不同的
separate与divide的区别： separate着重指把原来结合在一起的、混合在一起的事物或人分开或隔离，divide着重指将整体分成若干部分。
David and his sister have been sleeping in separate rooms. 大卫和他的妹妹睡在各自的房间里。
He divided the cake into five parts.
练习： The whole class was _________________five groups. 全班分成了５组。
England is ___________________ France by the Channel. 英法两国由英吉利海峡隔开。
6. strike 的用法vt. vi. (struck, struck/stricken)
(1) 打，击，砍，敲 He was so angry that he struck the table with his fist.
(2) （某种想法）忽然出现；使（某人）突然意识到 A good idea suddenly struck her.
（3）给某人某种印象 I was deeply struck by the film star’s beauty.
（4）（钟）敲响The church clock began to strike twelve. 教堂的钟开始敲12点。
（5）=hit 指疾病、火灾、自然灾害等突然袭击
I fear an earthquake will strike this area again. 我担心地震会再次发生在这一地区。
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