18．-Our holiday cost a lot of money．
-That doesn't matter __   ____ you enjoyed yourselves，（　�。�
A．so long asB．unlessC．even thoughD．while

分析 --我們的假期花了很多錢．
--這并不重要，只要你玩的很開心．

解答 答案A．
so long as"只要"，引導(dǎo)條件狀語從句．unless"除非，如果不"，在意義上相當(dāng)于if…not，因此在有些場合中unless與if…not可互換使用，引導(dǎo)條件狀語從句． even though"盡管，即使"，引導(dǎo)讓步狀語從句．while表示"當(dāng)…的時候"，引導(dǎo)時間狀語從句；意為"盡管、雖然"，引導(dǎo)讓步狀語從句；意為"而、但是"，引導(dǎo)比較狀語從句．分析可知前后兩句話之間是邏輯上的"條件"關(guān)系，再結(jié)合句子所表達(dá)的意思可知答案選A．

點評 本題考查從屬連詞的用法．連詞的用法辨析，要注意分析主從句之間的邏輯關(guān)系，再確定相應(yīng)的連詞，同時注意不同的連詞的語義及用法區(qū)別．

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