1.The flowers smelling sweet.为什么是smelling,而不是smelt 2.children weighing less than 40 pounds must be in a child safety seat.为什么是wighing而不是weighed3.He never speaks first,unless asked.后面的asked前面不可以加be吗?为

1.The flowers smelling sweet.为什么是smelling,而不是smelt 2.children weighing less than 40 pounds must be in a child safety seat.为什么是wighing而不是weighed3.He never speaks first,unless asked.后面的asked前面不可以加be吗?为
1.The flowers smelling sweet.为什么是smelling,而不是smelt
2.children weighing less than 40 pounds must be in a child safety seat.为什么是wighing而不是weighed
3.He never speaks first,unless asked.后面的asked前面不可以加be吗?为什么?
4.lost in thought,he almost ran into the car in front of him.第一个词为什么不是losing或者having lost
5.you wouldn'd be feeling fed up with the job anyway.为什么feeling前面还有个be,fed up with前面可以加be 或者feel等等,怎么这出现了两个~
6.I‘m fed up with and wish i had an ordinary nine-to-five job.这个had怎么不是have
7.Every year a flood of farmers ___in Shenzhen for the moner-making jods they
___before leaving their hometowns.
A.arrived promised
B.arrives were promised
C.arrive have peomised
D.arrive have been premised
为什么选D
8.----We’ve spent too muvh money recently.
-------Well,it isn't surprising.Our friends and relatives___around all the time.
A.came B.have come C.had come D.have been coming
为什么选D
9.It is reported that some wild animals were found___in a big cave in the mountains.
A.to hide dead B.hidden dead C.hiding dead D.hidden death
为什么选B
10.Having found her car stolen,Alice called the police.
Cheating by using a calculator,TOM failed in the exam.对比这两个句子,讲讲开头,为什么一个有完成,另一个是直接ing
11.Faced with such a difficult situation,the manager will have a hard time.为什么开头的face是过去式,不是ing
12.Some food looking terrible is in fact delicious to taste.为什么是looking而不是looked.
13.He has been seeking a job every day since he lost his job theer months ago.为什么lost不加完成
14.I am calling you in order to talk anout what we discussed the orther day.为什么discuss不加完成.
15.I just don't understand why you are always criticizing me.为什么always前面有个be
16.Please come tomorrow afternoon.I will be having a meeting tomorrow.为什么不是will have
17.Julie doesn't work in the bookstore.She left two months ago.为什么不是hasn't work
18.Where do you sugest I should stay?I 前面为什么不加that
19.Regardless of how skillful you are,we urge you not to do this,or you will lose you job.开头为什么不是despite of
20.She rang off before i had time to ask her name.为什么rang off 不加完成
21.Whoever disagrees over the plan may give me yourreason.开头为什么不是no matter who
22.The flowers making the room smell sweet.为什么不是smelt
23.It is the third phone he has bought within a month.为什么不是had
24.I have to go to school at once----the first class begins at 8:00.为什么不是will begin
25.differ 后面可以加什么介词.

1.The flowers smelling sweet.为什么是smelling,而不是smelt 2.children weighing less than 40 pounds must be in a child safety seat.为什么是wighing而不是weighed3.He never speaks first,unless asked.后面的asked前面不可以加be吗?为
1.The flowers smelling sweet. 为什么是smelling,而不是smelt
这不是一个完整的句子,现在分词短语smelling sweet做后置定语,修饰the flowers.
因为smell此处做系动词,而系动词无被动用法,所以不能用过去分词smelt引导此后置定语.

2.children weighing less than 40 pounds must be in a child safety seat.为什么是wighing而不是weighed
同理,weighing less than 40 pounds做后置定语修饰children.
而weigh此处意思是“重达...”,同样无被动语态,所以也不能用其过去分词weighed引导后置定语.
3.He never speaks first,unless asked.后面的asked前面不可以加be吗?为什么?
unless asked = unless he is asked,这是状语从句的省略语法,必须把状语从句的主语和be动词一起省略.

4.lost in thought,he almost ran into the car in front of him.第一个词为什么不是losing或者having lost
he和lose之间构成被动关系,即he be lost in thought（固定短语be lost in “沉迷于...”）,所以只能用过去分词做状语.
而losing和having lost均表示he和lose之间为主动关系.
5.you wouldn'd be feeling fed up with the job anyway.为什么feeling前面还有个be,fed up with前面可以加be 或者feel等等,怎么这出现了两个~
此处使用了过去将来进行时态：would be doing sth.
如果不使用该时态,则须变为：wouldn't feel fed up with...
6.I‘m fed up with and wish i had an ordinary nine-to-five job.这个had怎么不是have
wish后面的宾语从句使用虚拟语气,所以把have变成had,即从句使用一般过去时
7.Every year a flood of farmers ___in Shenzhen for the moner-making jods they
___before leaving their hometowns.
A.arrived promised
B.arrives were promised
C.arrive have peomised
D.arrive have been premised
为什么选D
主语中心词是farmers,为可数名词复数,所以用arrive不用arrives,排除AB；
定语从句中的主语they（即a flood of farmers）和promise之间为被动关系,排除C.
8.----We’ve spent too muvh money recently.
-------Well,it isn't surprising.Our friends and relatives___around all the time.
A.came B.have come C.had come D.have been coming
为什么选D
这叫现在完成进行时,即表示动作come around从过去开始发生,一直在延续,可能还会继续延续下去.
9.It is reported that some wild animals were found___in a big cave in the mountains.
A.to hide dead B.hidden dead C.hiding dead D.hidden death
为什么选B
把主语从句的被动语态改为主动语态为：somebody found some wild animals ___ in...
形容词dead做伴随状语,排除D；
宾语some wild animals和宾语补足语hide之间为被动关系,所以用过去分词hidden
10.Having found her car stolen,Alice called the police.
Cheating by using a calculator,TOM failed in the exam.对比这两个句子,讲讲开头,为什么一个有完成,另一个是直接ing
第一句中,find动作发生在call the police之前,所以用其完成形式having found...,当然这两个动作如果连接紧密,也可以直接写成Founding her car...；
第二句其实也可以用Having cheated...
有时这两种结构区别不大,如果说话人强调状语动作和谓语动作的先后关系,就可以用完成形式,如果不强调,也可以不用.
楼主不必纠结于此.
11.Faced with such a difficult situation,the manager will have a hard time.为什么开头的face是过去式,不是ing
固定短语be faced wth...,即主语the manager和face构成前面的短语,所以用过去分词；
如果没有with,则必须直接用Facing such a...
12.Some food looking terrible is in fact delicious to taste.为什么是looking而不是looked.
解释同第一题：被修饰词some food和后置定语look terrible之间为主动关系（系动词无被动用法）,所以用现在分词looking

13.He has been seeking a job every day since he lost his job theer months ago.为什么lost不加完成
since引导的时间状语从句用一般过去时,而主句才会使用现在完成时或现在完成进行时has been seeking...
14.I am calling you in order to talk anout what we discussed the orther day.为什么discuss不加完成.
该从句中的时间状语the other day意思是“几天前”,所以只能用一般过去时,而不能用完成时态.
再如一个句子如果用yesterday做时间状语,它同样不能用完成时态.
15.I just don't understand why you are always criticizing me.为什么always前面有个be
always可用于进行时态中,表示说话人一种讨厌,喜欢,赞美等感情色彩.
而进行时态要求谓语含有be动词.
16.Please come tomorrow afternoon.I will be having a meeting tomorrow.为什么不是will have
will be having是将来进行时的谓语结构,强调将来某个时间会正在发生进行的动作或状态.
此句强调“你明天下午来的时候,我会正在开会”.

17.Julie doesn't work in the bookstore.She left two months ago.为什么不是hasn't work
使用hasn't worked也可以,此句说话人只是强调“她现在不在这里工作”而已.
18.Where do you sugest I should stay?I 前面为什么不加that
do you suggest视为插入语,放在疑问词where之后即可,问句本来是：Where should I stay?
再如：Why do you think I am a student?
19.Regardless of how skillful you are,we urge you not to do this,or you will lose you job.开头为什么不是despite of
regardless of意思是“不管/无论”,而depite of意思是“尽管/虽然”,句意不通.
20.She rang off before i had time to ask her name.为什么rang off 不加完成
用had rung也可以,但是其实before后面此句的动作并没有真正发生.

21.Whoever disagrees over the plan may give me yourreason.开头为什么不是no matter who
从句Whoever disagrees over the plan做整个主句的主语,而不是状语.
no matter who只能引导让步状语从句,而剩下的主句成分必须完整,但是该句用了no matter who,则主句缺少主语.

22.The flowers making the room smell sweet.为什么不是smelt
此句同样不完整.
make是使役动词,the room是宾语,而宾语补足语如果表示主动,则只能用动词原形（其实是不带to的不定式）,而不能使用现在分词.
即只能说make sb/sth do sth,而不能说make sb/sth doing sth.
23.It is the third phone he has bought within a month.为什么不是had
主句be动词时is,所以从句用现在完成时.
如果主句是it was the third time,则从句使用过去完成时,即：he had bought...
24.I have to go to school at once----the first class begins at 8:00.为什么不是will begin
后句动作是固定时间发生的,即为一般情况,所以可以直接用一般现在时,而不必使用一般将来时.
再如：I‘ve go to go now. My plane leaves at 8:30.

25.differ 后面可以加什么介词.
一般是两个介词：
1）differ from... 和...不同
2）differ in... 在...（方面）不同

1应是The flowers smell sweet.吧

我大概看了一下几乎都是事态的问题你看看ed 是过去时ing是现在进行的