【正文】 我們怎么辦？ 7. as (so) long as You may use the room as long as you keep it clean. 只要保持清潔你可以用這個房間。ll lend you the book on condition (that) you return it on Monday. 只要你能在星期一還我，這本書我就借給你。 2. even if (though) Even if I have to walk all the way I39。 引導(dǎo)比較狀語從句的從屬連詞有： 1. than We have produced 20% more cotton this year than we did last year. 我們今年棉花產(chǎn)量比去年高百分之二十。t play half as well as his sister. 他演奏的水平不及他姐姐的一半。 2. so that Speak clearly so that we may understand you. 講話要清楚，以便我們能聽明白。 引導(dǎo)結(jié)果狀語從句的從屬連詞有： 1. so...that She was so moved that tears came to her eyes. 她感動得熱淚盈眶。 引導(dǎo)名詞性從句的連詞有三個：(1)that (本身無意義)，(2)whether (or not)，(3)if。 I don39。 需要注意的是：whether (or not) 可引導(dǎo)大部分名詞性從句；if僅可引導(dǎo)賓語從句，而且不可跟or not。t make much difference. 他們來不來關(guān)系不大。連詞是一種起連接作用的詞。連詞按其性質(zhì)分為兩大類；并列連詞和從屬連詞。并列連詞包括：基本并列連詞如 and, or , but , 關(guān)聯(lián)連詞如 either...or , neither...nor , not only...but also ,both ...and, whether...or 等；介于并列連詞與從屬連詞之間的連詞；介于并列連詞與從屬連詞或介詞之間的結(jié)構(gòu)如 as well as , as much as, rather than , more than, no less than 等；此外還有些39。一些語法學(xué)家把它們稱為連接副詞，如 nevertheless, however, meanwhile, otherwise, likewise 等，它們在句中做連接性狀語。1) 表示意義轉(zhuǎn)折和對比的并列連詞常見的有：but , while, whereas, still, yet , nevertheless, likewise, anyway , only 等。2) 表示選擇的并列連詞常見的有： or, whether...or, either...or, otherwise 等。上例中最后一句， whether...or 結(jié)構(gòu)在句中擔(dān)任句子的從屬成分。 or 用于表示否定的條件意義時，有時可與連用。ll miss the last bus.Or 連接主語時，如主語都是單數(shù)，動詞則取單數(shù)形式；如主語都是復(fù)數(shù)，動詞則取復(fù)數(shù)形式，如果主語有的是復(fù)數(shù)，動詞則取復(fù)數(shù)形式，如果主語有的是單數(shù)，有的是復(fù)數(shù)，動詞的數(shù)則與它靠近的主語的數(shù)相一致。例如：Neither he nor I am a good student. 3) 表示因果意義的并列并列連詞常見的有： for ,so ,therfore ,hence ,thus, accordingly, consepuently, on that account, in that case 等。 for 引導(dǎo)的分句只能置于句末，而且必須用逗號與前一分句隔開。4) 表示聯(lián)合關(guān)系的并列連詞常見的有： and, both...and, neither...nor, not only... but also 等。 Both ...and 不能連接兩個以上的并列成分，也不能連接分句。同39。也39。(3) rather than 表示 39。 之意. 例如: It was what he meant rather than what he said.I rather than he am to blame.(4) no less than 表示 39。 之意. 例如: He no less than you is my friend. 從上述諸例可以看出當(dāng) as well as ,more than, rather than, no less than 連接兩個成分作主語時謂語動詞應(yīng)于第一個成分的數(shù)相一致. 在使用并列連詞時我們應(yīng)該注意: (1) 并列連詞不可以連用. 例如: 誤 She never said she was homesick, and but she was.正 She never said she was homesick, but she was.誤 I gave him all he asked for, or but he is still not satisfied.正 I gave him all he asked for, but he is still not satisfied.(2) 有些連接性狀語副詞可以和某些從屬連詞對應(yīng)使用. 例如: If the part is faulty, then replace it.Just as the sun is the central body of the solar system, so the nucleus is the core of the atom.Although it was barely four o39。clock,but the lights were already on.正 Although it was barely four o39。clock, but the lights were already on.(3) 在 for 或 so that 引出的分句中如果主語與前一分句的主語所指相同其主語不可以省略. 同樣, 如果第二個分句是由連接副詞引出的其主語通常也不可省略. 例如: 誤 He shook his head, for thought differently.正 He shook his head ,for he thought differently.誤 They were trying to save so that could buy a house.正 They were trying to save so that they could buy a house.2. 從屬連詞從屬連詞用來引導(dǎo)名詞從句和各類的狀語從句。1) 簡單從屬連詞常見的有：after, although, as, because, before, if, lest,once, since, that, till, unless, until, when, where, whether, while 等。t get a grant unless I had five years39。例如：She was so moved that tears came to her eyes.Forgive them, inasmuch as they are young.3) 關(guān)聯(lián)從屬連詞 由兩個關(guān)聯(lián)構(gòu)成的，如： as...as, nore(less,er)...than, no sooner...than, so ...as , so...that,such...sa , the...the, whether...or 等，例如：The easier, the better. She works harder than all of us.使用從屬連詞時，應(yīng)該注意(1) 由從屬連詞引導(dǎo)的狀語從句，其位置通常是可變的。例如：I teach not because teaching is easy for me , but because I like the pace of the academic calendar.使用連詞時, 還應(yīng)該注意:1. because, for, since, as 的區(qū)別because語氣強, 表示客觀必然原因：例如: He is absent, because he is ill. 因為生病，所以他沒來。）for 語氣輕,表示非客觀必然的原因,是主觀可改變結(jié)果的原因,甚至是猜測可能的原因:He must be ill, for he is absent. “缺席”不一定是“生病”，只是交流猜測。t feel well,you had better stay at home. 1. 我不進(jìn)去了,因為我爸爸在里面. I won39。t wanted to go out,for he was unhappy. 5. 既然你工作忙，你就不必跟我們一道去了。m female. 7. 他付給我比別人少的錢,僅僅因為我是個女的. He paid me less than the others, only because I39。s begin our meeting. 2) when,while,as引導(dǎo)時間狀語時的異同. when,表示時間點,多用when,是時間段時則三個連詞都可以.When/While/As I was walking in the street,I met a friend of mine. 只能用when 的句型: 1. 放句中,主句是進(jìn)行時,從句是短暫動作,表示這時突然 I was reading in the room, when a girl shouted for ，這時突然聽到有一個女孩喊救命！ 2. 從句是短暫動作:When I got up, I heard the bell ring. 當(dāng)我起床的時候，我聽見鈴響了。I am poor while you are ，你卻很富有。2. 表示“趁著還來得及的時候,趕快.... while it is hot. 趁著老師還在教室,你趕快去問他吧. Y