By getting down___ all these jobs,we can certainly overcome all the difficulties facing usA to do B doing C to doing D do再问一个：to什么时候用作介词.什么时候用成不定式?

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Bygettingdown___allthesejobs,wecancertainlyovercomeallthedifficultiesfacingusAtodoBdoingCtodoingDdo再

By getting down___ all these jobs,we can certainly overcome all the difficulties facing usA to do B doing C to doing D do再问一个：to什么时候用作介词.什么时候用成不定式?
By getting down___ all these jobs,we can certainly overcome all the difficulties facing us
A to do B doing C to doing D do
再问一个：to什么时候用作介词.什么时候用成不定式?

By getting down___ all these jobs,we can certainly overcome all the difficulties facing usA to do B doing C to doing D do再问一个：to什么时候用作介词.什么时候用成不定式?
词组get down to sth/doing sth 表示“开始做某事,认真做某事或者重视某事物”,我们 来举两个例子,Let's get down to business.我们开始办正事吧.It's time I get down to some serious work.该是我认真干点事情的时候了.所以选择C
to这个词一般情况下只能做介词、副词或动词不定式的标志词（小品词）.
当它后面接动词时,它是小品词；
当它后面接宾语（名词、代词、动名词、副词、介词短语等都可以用作宾语但动词永远不能做宾语）时,它是介词；
当上述两种情况都不符合时,to往往是副词,而且当它做副词时只能表示“苏醒”、“靠岸”等义.
但是对于填空中既有do又有doing的时候,就需要靠平时积累的短语的固定形式用法了
具体有一些TO短语的分类,是介词还是不定式,你自己细细看吧

B doing
get down doing something 开始认真做某事

c.get down to
这里的to是介词，当to作介词时，其后接名词或动名词；作不定式时，其后接动词原形。
eg: look forward to doing, to 是介词
plan to do sth. to 是不定式

By getting down___ all these jobs,we can certainly overcome all the difficulties facing usA to do B doing C to doing D do再问一个：to什么时候用作介词.什么时候用成不定式? It is easier____around Shanghai____subway.A:to get; by tehB:getting; byC:to get; byD:getting; by the The patient is getting ___________day by day.A.ill B.bad C.worse D.worst the sick boy is getting( )day by day.A.worse B.bad C.badly D.worst 单词转句子The robber/by/a bus./got away/getting on 怎么转句子? where are you going?to help the neighbors( )the dinner party a:to get ready b:get ready forc:getting ready for d:by getting ready The patient was getting better,( )bit by ( )bit.A a;aB /;/为什么选b不选a啊? getting ready for a getting a license是什么意思 I'm getting a it's getting cold,if you can't give me a hug,by me a coat.si中文的意思 We may have some difficulties _____ by six o’clock.a.for getting there b.to get there c.with getting there d.getting there选什么要解释 some people have long believed that getting bitten by a dog leads to the birth of little dogs 英语翻译You know the feeling:Getting out of bed Monday morning is a struggle,followed by five long,bleak days. I was getting out of my car when I saw her_ by.a passesb passdec to passd pass getting getting Getting