come up with与catch up with都当赶上时可以互换吗? 一个句子什么时候用不定式,什么时候用过去分词?

3.appreciate为什么只有doing,没有appreciate to do

不行,它们有不同的意思和用法。
come up with
1)想法上的追随。(比如说某人同意某人的想法)
2)赶上了。(比如是旅游,某人赶上了……和……景色)

catch up with
1)紧跟着某人的身后。(没有真正意义上的赶上,只是紧跟着)
2)和某人追忆往事。(比如和老朋友追忆以前的趣事)

一、过去分词用法一般都比较简单,就是做后置定语修饰前面的名词,两者之间主要存在被动的关系(如果是主动,应该用现在分词)。

二、不定式的句法功能
1 不定式做主语
1)To say something is one thing; to do it is another.
2)It is not a good idea to build houses along the lines where two of the earth's plates join together.
注:充当主语的不定式即可置于句首,位于谓语动词之前,也可作为句子的真正主语置于句末,用作形式主语.

2 不定式作表语
3)Her uncle seems to be acting rather strangely towards her these days.
4)The purpose of the fence is to keep out a type of wild dog called a "Dingo".
5)One suggested answer is for farmers to limit the number of their cattle.
注:充当表语的不定式一般位于be ,seem等系动词后.

3 不定式作宾语
6)Shylock agreed to lend Antonio money on one condition.
注:充当宾语的不定式位于及物动词后.常用不定式作宾语的动词有:agree, plan, determine, dare, refuse, hope, wish, expect, promise, choose, pretend, decide, manage, intend, offer, afford, demand.
7)The dusty air makes it difficult to get a clear picture of space.
注:充当宾语的不定式如果有自己的表语,则可用代替只个不定式作为形式宾语,而作为真正宾语的不定式则放在表语之后.以it作为形式宾语的这种结构常用在think, feel, find, make, consider等动词之后.
big and strong.

4 不定式作宾语补足语
8)The powder made from fish, blood and bones will make the cabbage plants grow big and strong.
9)Portia told Bassanio to go to his friend at once.
注:在下列动词后作宾语补足语的不定式通常不带to.这些动词是observe, notice, see, hear, watch, have, feel, make, let.但上述动词转换为被动语态时,其后的不定式须带to.例如:The cabbage plants will be made to grow
动词不定式(to do)是一个重点,也是中考要考查的一个项目。动词不定式属于非谓语动词的一种形式,很多同学经常把它和谓语动词混在一起,掌握起来有困难。

仔细看哦~
appreciate sb for doing sth,感谢某人做的某事(表示感谢) 可以理解了吧!

参考资料:说不完,你到我空间去看:http://hi.baidu.com/helen博客/blog/item/bb7c6f12248a4f115aaf53a2.html

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第1个回答  2011-02-12
爱莫能助啊
我是语法盲
第2个回答  2011-02-12
两者含义有明显区别。come up with可翻译成赶上、达到;catch up with,可翻译成赶上、追上,后者更侧重主观努力。
第3个回答  2019-09-20
不定式作宾补,修饰宾语,表示的动作一般是将来发生的,如:
i
want
him
to
help
me
tomorrow.
过去分词作宾补,修饰宾语,表示的动作和宾语之间是被动关系,如
i
found
my
litter
brother
beaten
现在分词作宾补,表示的动作和宾语之间是主动关系,如
when
i
passed
by,
i
saw
him
playing
computer
games.
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