As引導(dǎo)從句歸納總結(jié).doc

As引導(dǎo)從句歸納總結(jié)一、 as引導(dǎo)定語從句一）as引導(dǎo)限制性定語從句主要結(jié)構(gòu)有：the sameasasassuchassoas主句中出現(xiàn)the same, as, such, so修飾先行詞，需選擇as做關(guān)系代詞在定語從句中做主語或賓語。1. Its the same person as we wanted to find yesterday .我們昨天要找的是同一個人。2. Such girls as he knows are good at English .他所認(rèn)識的女孩都擅長英語。3. Do you have such books as we like ?你有我們喜歡那種書嗎？4. She will marry as healthy a man as she can find .她將嫁給她能找到的任何一個有錢人。5. There is so warm a house as we want to live in .這里有如此暖和的房子，我們都想住在里面。6. He has so difficult a problem , as none of us can solve .他有如此難的一個問題，我們沒有人能解決。二）引導(dǎo)非限制性定語從句1. as引導(dǎo)非限制性定語從句，指代整個主句內(nèi)容，從句可置于句首，句中或句尾1) As everyone knows ,China is a beautiful country with a long history .每個人都知道，中國是一個有著悠久歷史的美麗國家。2) The earth , as we know , moves round the sun .地球，我們都知道，圍著太陽轉(zhuǎn)。3) Tom works hard and is willing to help others, as we all know.湯母工作努力，并且樂于助人，這一點(diǎn)我們都知道。2. 非限制性定語從句中的謂語為被動式時，常用as做主語be said/known/announced/reportedbe mentioned/expected/discussed1) Grammar , as has been said before, is not a set of dead rules.語法，就像以前所說，不是一套死規(guī)則。2) As is known to all, Taiwan is part of China .3) As is illustrated in the picture，one drop of water does not make a sea；one tree does not make a forest；one person does not make a society.3. as引導(dǎo)非限制性定語從句，有“如，似，正像”的含義，因此，下列句式多用as1) as has been said above 如上所說2) as anybody can see正像每個人所看到的那樣3) as we had expected正如我們所預(yù)料的那樣4) Things are not always as they appear.事情并不一直像他們表面那樣。5) The boy has as much progress as we had expected.正像我們所預(yù)料的那樣，這個男孩取得了大的進(jìn)步。二、as作從屬連詞用時，可以引導(dǎo)五種狀語從句?，F(xiàn)歸納如下：1. as表示“當(dāng)?shù)臅r候”，引導(dǎo)時間狀語從句，多強(qiáng)調(diào)主句和從句中的動作或狀態(tài)同時發(fā)生，從句可放在主句前，也可放在主句后。例如： As I waited at the stop， I heard a big noise. 當(dāng)我在車站等車的時候，我聽到一個很大的聲響。 She rose up as he entered. 當(dāng)他進(jìn)來時，她站了起來。 2. as表示“因?yàn)椤薄ⅰ坝捎凇?，引?dǎo)原因狀語從句，其語氣不如because強(qiáng)，通常為附加說明的理由，且是已知曉的原因，主句與從句沒有邏輯上的因果關(guān)系。例如： As she was not well, I went there alone. 因?yàn)樗眢w不好，所以我獨(dú)自到那里去了。 As he is a tailor, he knows what to do with this material. 由于他是個裁縫，他知道怎樣利用這塊布料。 3. as表示“雖然但是”，引導(dǎo)讓步狀語從句，從句通常用倒裝語序，把從句的表語、狀語或動詞原形放在as前面，可以用though替代。例如： Child as he is, he knows a lot. 雖然他是個孩子，但他知道的東西很多。 Hard as it was raining， they went on working in the field. 雖然天下大雨，但他們繼續(xù)在田地里干活。 4. as表示“按照”、“依照”、“像”，引導(dǎo)方式狀語從句，從句置于主句之后。例如： You should do as the teacher tells you.你應(yīng)當(dāng)依照老師所說的去做。 The absence of air also explains why the stars do not seem to twinkle in space as they do from the earth. 空氣的不存在，也說明了為什么在空中星星看來并不閃爍，而不像從地球上看的那樣。 5. as表示“像一樣”，引導(dǎo)比較狀語從句，對主句和從句的動作或狀態(tài)加以比較，說明它們之間有相似之處，在從句中常省略與主句相同的部分