《21世紀(jì)大英漢詞典》（李華駒 主編）第1319頁long詞條
as long as
1.長達；達…之久
2.當(dāng)…時候
3.既然，由于，因為
4.如果，只要，在…情形下
第1：長達/達…之久；盡可能長（的/地）
1.1：長達，達…之久——用于同級比較（long可以是形容詞，也可以是副詞）
The wall is as long as that one. 這道墻與那道墻一樣長。
《牛津英語用法指南》第三版第107頁
as long as用在數(shù)字前面可以表示“很長”的意思。
These meetings can last as long as four hours.
這些會議可能要開上四個小時。
《英漢多功能學(xué)習(xí)詞典》第89頁as詞條
as long as…在…期間；達…之久
play the piano as long as five hours /as long as you like
彈五個小時之久的鋼琴/鋼琴你喜歡彈多久就彈多久
《朗文高級英語應(yīng)試詞典》第1383頁long詞條
(for) as long as長達；達…之久
You can stay for as long as you want. 你想逗留多久就逗留多久。
She tried to stay awake for as long as she could.
她盡量不讓自己睡去，能醒多久就醒多久。
1.2：盡可能長（的/地）
與possible連用，構(gòu)成as long as possible，可理解為“盡可能長（的/地）”
《麥克米倫高階英漢雙解詞典》第1611頁possible詞條
as soon/quickly/much etc as possible盡可能早/快/多等
Hold your breath for as long as possible. 盡可能長地屏住呼吸。
《朗文高級英語應(yīng)試詞典》第1383頁long詞條
The fruit should be left on the tree as long as possible.
水果應(yīng)該盡可能留在樹上長久一些。
第2：
as/so long as：在…期間，當(dāng)…的時候
《英漢多功能詞典》第1244頁long詞條
as/so long as在…期間
I won’t forget your kindness as long as I live. 我一輩子也忘不了你的好。
《新世紀(jì)英漢大詞典》（主編胡壯麟）第1558頁long詞條
as long as sth or so long as sth: (when)當(dāng)…
You can’t turn the heating off as long as the system is on.
系統(tǒng)開著的時候，你無法關(guān)掉暖氣。
《韋氏高階英語詞典》第965頁long詞條
as long as or so long as: during the time that; while
The economy will remain strong as long as there are jobs to go around.
第3：
as/so long as既然，由于，就…來說，相當(dāng)于since, now that等
《牛津高階英漢雙解詞典》第八版第1229頁long詞條
So long as there is a demand for these drugs, the financial incentive for drug dealers will be there. 只要對這些毒品有需求，就存在著對販毒者的經(jīng)濟誘因。
《韋氏高階英語詞典》第965頁long詞條
as long as or so long as: since:
As long as I’m here, we may as well begin.
So long as you feel that way I’ll leave.
《英漢大詞典》（陸谷孫主編 第2版）第1130頁long詞條
as/so long as既然，由于
So long as you are going to town anyway, you can do something for me.
既然你反正要進城去，不妨替我辦一點事。
第4：
如果，只要，相當(dāng)于so long as, only if，on (the) condition that
《牛津高階英漢雙解詞典》第八版第1229頁long詞條
We’ll go as long as the weather is good.
只要天氣好我們就去。
《麥克米倫高階英漢雙解詞典》第1239頁long詞條
as/so long as只要
My parents don’t care what job I do as long as I’m happy.
我父母對我從事什么工作無所謂，只要我開心就好了。
《牛津英語用法指南》第三版第107頁
as/so long as常常用來提出條件句。
You can take my car as/so long as you drive carefully.
（= …on condition thatyou drive carefully）
你可以用我的車，只要你小心點兒開。
《英漢大詞典》（陸谷孫主編 第2版）第1130頁long詞條
as/so long as只要，如果
You may use the book as you like, so long as you keep it clean.
你盡管用這本書，只要不把它弄臟就行。
2017年3月10日
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