Not knowing how to operate a switchboard,I had to ask the office for help.这句话为什么开头要用Not knowing而不能用Having not known

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Not knowing how to operate a switchboard,I had to ask the office for help.这句话为什么开头要用Not knowing而不能用Having not known
Not knowing how to operate a switchboard,I had to ask the office for help.这句话为什么开头要用Not knowing而不能用Having not known

Not knowing how to operate a switchboard,I had to ask the office for help.这句话为什么开头要用Not knowing而不能用Having not known
去看一下独立主格亲〜
2. 不能省略being (having been)的情形：在下列两种情况下,独立主格结构中的being（或having been）不能省略.
(1) 独立主格的逻辑主语是代词时.如：It being Sunday, we went to church.因为是星期天,我们去做了礼拜.
(2)在There being+名词的结构中.如：There being no bus, we had to go home on foot.因为没有公共汽车,所以我们不得不步行回家.
3. 在“名词（或代词）+介词短语”构成的独立主格结构中,一般不用形容词性物主代词和冠词.如： Miss Smith entered the classroom,book in hand.史密斯小姐走进了课室,手里拿着一本书.比较with的复合结构.如：Miss Smith entered the classroom,with a book in her hand.
4. 独立主格结构没有所有格形式The chief-editor arriving, we began the meeting. 主编来了,我们开始开会.(比较动名词复合结构.)

how to do the homework,I went to ask my teacher for help.A.Not to know　　 B.Not knowing 　C.Knowing not　　 D.Not known 选项原因 ___help the people in the snowstorm in the south made him worried.A not known how to B unknown what to do to C His knowing not how to D his not knowing how to Not knowing how to purr is a great handicap这话什么意思 I swung around to his back,not even really knowing how I managed it, forgive me for not knowing how to joke,to say you will take it seriously这是病句么 Not knowing how to operate a switchboard,I had to ask the office for help.这句话为什么开头要用Not knowing而不能用Having not known Not knowing what to do,he went to his parents for help.为什么是not knowing不是no knowing? She stood there____what to do.A.knew notB.knowing notC.not knowD.not knowing ____,he asked the teacher .为什么选BA.Not knew how to do B. Not knowing what to do C.Didn't know what to do D. Because not know how to do it. The old lady ,not ______ how to surf the Internet ,decided to learn it from her grandsonA.know B.known C.knowing D.to know ______ how to operate a washing machine,I had to ask my wife to show me the correct proceduresA.Not known B.Not to know C.Not knowing D.Having not known so knowing how to ask for information politely is important knowing为什么用ing形式 it`s not good ____( learn) english by heart without knowing how to use them 答案是learning为什么不能用to learn? “the foolish man stood there not knowing what to do”为什么用“knowing”? 分析英语句子成分 Not knowing how long the rain would last.Are they causing you to give up what y分析英语句子成分Not knowing how long the rain would last.Are they causing you to give up what you want to do?You should know that you cann In order not to o—— people,we need to learn how to be polite. _how to find the place ,i went to ask policemen.a.Not knowingb.knowing notc.Don't knowd.No knowing Knowing what you know,how could you not这句话怎么翻译比较合适~