Both of them have come . 他们俩都来了。
Neither of them has come . 他们俩都没来。
Either of them has come . 他们俩全都来了。
〖说明〗both of 着重指整体“两者都”，either 虽然也有“两者都”之意，但强调“两者中的任何一个”。故：both of 作主语时，谓语动词用复数。either of 作主语时，谓语动词用单数。作形容词时，both 修饰复数名词，either 修饰单数名词。neither 作形容词，也是修饰单数名词。如：
You can sit on either of the end of the boat .
Both answers are correct . 两个答案都对。
Either answer is correct . 两个 ( 中的任何一个 ) 答案都对。
Neither answer is correct . 两个答案都不对。
2 . at first 起初，开始时
At first the baby was happy . Half an hour later she began to cry .
at last 最后，终于／at the beginning of 起初
At last he had an idea . 终于，他有了主意。
I found a job at the beginning of last month . 上月初我找到一份工作。
3 . climb up 攀登，爬上
There he gets out of the lift and climbs up to the fifteenth floor on foot .
4 . at the foot of 在……的底部 ( 脚下 )
There is a small river at the foot of the hill .
5 . go down 下去， ( 日，月等 ) 落下
The sun has gone down .
The wind has gone down a little .
6 . have a great time = enjoy oneself过得愉快极了
I had a great time during the holidays .
—Did you have a great time at her birthday party ? 《九年级英语第二十四单元》出自：www.89xue.com网
www.89xue.com
—Yes , we had a great ( good , nice , wonderful ) time .
7 . at all 全然；究竟
①用于否定句，意为“一点儿也不”，“完全不”。
I didn\'t understand anything at all .
No problem at all . 完全不成问题。
②用于疑问句，意为“究竟”，“到底”，“真的”。
Do you know it at all ?
8 . be interested in 对…感兴趣
At the age of eight he became very interested in maths .
9 . have a big smile 满面笑容
You can see from my photograph that I have a big smile and long black hair .
He had a big smile when I met him next .
10 . ask for 要求，约请
Mary asked for time to think this over .
11 . be covered with 覆盖着
The table is covered with a cloth .
The mountains were covered with snow .
二、学海导航
【学法指要】
单元难点疑点思路明晰
1 . 由 though 引导的状语从句的句型
Though I like writing to my penfriend , it takes a lot of time . 虽然我喜欢给笔友写信，但花了很多时间。
※ 由连词 though ( 虽然 ) 引导的状语从句，全句中有“但是”之意，然而 thought 与 but 不能前后连用，只能用其中一个。上句也可以说成：
I like writing to my penfriend , but it takes a lot of time .
※ though 引出的从句放在句首时，从句后面要有逗号。但也可将 though 引出的状语从句放在主句之后。
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