1.TOM is looking _____ at TIM

1.TOM is looking _____ at TIM
A.worry B.worried C.worried D.worrily(答案写的是B,不知为啥,为什么不用副词呢?)
2.I want to _____ their discussion.
A.take part in B.join C join in D.attend(答案写的是A,我TM就费解了A=C,怎么也是B吧,)
3.After the theatre was rebuilt,it is _____ it used to be.
A.as 4 times big as B.four times as big as C.as two times as big D.as big ai 4t imes(答案是B,为什么呢?)
4.You had better ______.
A.try not tobe late B.try not being late(答案是A,我就更费解了啊!try to do的意思不是努力去做么)
5.Today newly-produced mobiles can take pictures ___a camera.
A.as B.for C.like D.of(答案是C,为什么不用as呢?)
一共5道题,希望能把思路,理由给我说下,帮我搞懂了,我分都给你!
不懂的不要误导.

1.look是感官动词,用定语修饰,还有比如hear see taste smell 等
2.join,?join in和take part in
1)加入某党派、某组织或某社会团体,用join,不可用join in.如：
①He will never forget the day when he joined the Party.
他永远也忘不了他入党的那一天.
②His brother joined the army three years ago.
他哥哥是三年前参军的.
join还可解释为“连接”.如：
①The railway joined the two cities.
铁路把两个城市连接起来了.
②The two clauses are joined by a conjunction.
两个分句由一个连词连接起来.
3.这是一个固定结构 说倍数就是 1、倍数+比较级...
(1) 倍数 as...as (意思是“A是B的几倍”.)
I am twice as old as he. 我的年纪是他的两倍.
He earns twice as much as he used to. 他比往常多赚二倍的钱.
An ordinary subway train, approaching the station, can be twice as loud as the loudest jet. 发出的声音可能是喷射机的两倍.
She studies three times as hard as I. 她用功的程度是我的三倍.
This line is four times as long as that one. 这条线是那条线的四倍长.
We've produced twice as much cotton this year as ten years ago. 今年的棉花比十年前多了一倍.
He has got three times as many books as his sister. 他拥有的书的数量是他妹妹的三 倍.
在比较级前,还可以用over,more thant 等表示“比……倍还要多”.例如：
He is more than three times as rich as I. 他的财富是我的三倍还不止.
I am more than twice as old as he. 我的年龄是他的两倍还不止.
He studies more than three times as hard as I. 他用功的程度是我的三倍还不止.
He has collected more than three times as many stamps as I .他搜集的邮票是我的三倍还不止.
(2) 倍数+比较级 (意思是：A是B的几倍)
Line A is four times the length of line B. 线条 A 是线条 B 的四倍长.
I have five times the number of Tom’s books. 我有五倍于汤姆的书.
He has three times my money. 他的钱是我的三倍.
The river is ten times the length of the Tamsui River. 这条河的长度是淡水河的十倍.
This street is four times shorter than that one. 这条街道比那条短四倍.
The mother elephant is one hundred times heavier than the baby elephant.这只母象比小象重一百倍.
It is ten times louder than another. 它比另外一个的声音大十倍.
This street is three times wider than that one. 这条街比那条街宽三倍.
I am twice older than he. 我的年纪比他大两倍.
使用more...than 比较级的例句：
He earns five times more money than he did ten years ago. 他现在挣的钱比十年前挣的多 5 倍.
There are twice more students in our class than in theirs. 我们班的学生人数比他们班多两倍.
比较级也可使用分数、小数等数字.例如：
The box is one-third bigger than that one. 这个盒子比那个盒子大三分之一.
Last year the output value of industry was 59 percent higher than that of 1976. 去年工业产值比 1976 年增长了 59 ％.
My command of English is not half so good as yours. 我英语掌握得还不及你的一半儿好.
在比较级前,还可以用over,more thant 等表示“比……倍还要多”.例如：
It was over twice the distance of the earth from the sun. 那是地球到太阳的距离的两倍多.
He has more than three times my money. 他的钱是我的三倍还
4.还有就是尽力做某事
5.as 和 like 在汉语中都译做"像",但字面下的隐含意思是不同的.
like侧重A B两者间的比较,并不意味着A和B属于一类或完全相似.
例如:He speak English like an Englishman.(=in a way an Englishman
speaks English.)
表示有些相象
as则侧重于同一性,意味着A B两者属于同一类或完全相似.
例如:He speaks English as an Englishman.(=as well as an English.)
表示讲得一样好
as与like是英语中常见的两个词,他们的语义和用法很多.在语义上者两个词都可以当"像.","正如."讲,说明人与人、物与物、动作与动作、状态与状态之间的相似之处.但其语法结构却是不一样的.
一、当“像”讲时,语法结构的不同之处是：
1、as作连接词.她引导比较状语从句和方式状语从句,而且这两种从句通常为省略句.例如：
1、She is a fine singer, as her mother used to be.
2、There is as much water in this cupas in that one.
2、like作介词.例如：
3、My sister isn''t much like me.
4、The robot can''t work like man.
如果需要加强语气,再这两个词之前加上just之类的词即可.例如：
5、All the plants and animals need air just as they need water.
6、Mary goes to school at seven every morning just like her brother.
含义不同之处是：
(1)like只是单纯表示比较,而且通常不是同类事物进行比较：
7、The ship looks like a high building.
8、The sky was like ink over my head.
(2)as可表示同类事物比较.
9、This ship is as long as that one.
二、当“正如.”意义讲时,语法结构的不同之处是：
(1)as作关系代词或关系副词、引导定于从句.
as 在这样的句子里指全句所谈到的内容,引出非限制性定于从句,在从句中一般做主语或宾语.例如：
10、Metals have many good properties, as has been stated before.
11、As we said before, you have done a good job.
(2)like作界词.
12、She, like thousands of others, is fascinated by this work.
三、as与like有时可以换用.
(1)在非正式的美国英语中like可用作连词,代替as.例如：
13、Nobody loves you like I do, baby.
(2)在非正式的文体中,like,常被用来代替as if.
14、Duke said:"You feel like you could reach out and touch it (the space)."
四、as常用于下列词组：在as you know ,as we agreed, as you suggested 这些词组中,as的实际意义不是比较,也不是相似,而是同一事物或人之义.例如：
as you know 的意思不是you know somthing like this ,而是you know this.
15、As he knew, she wasn''t much at letter-writing.
16、As all his friends agree, he was unusually warm-hearted,loving and generous.
在非正式问题中,有时可以在这种词组里用like,但在受过教育的人所使用的英语中不多见