6．______again later if the webpage you are looking for is temporarily unavailable．（　�。�
A．TryB．To tryC．Having triedD．Trying

分析 如果你瀏覽的網(wǎng)頁(yè)暫時(shí)鏈接不上，等會(huì)再試試．

解答 答案：A．
祈使句，表示命令，請(qǐng)求．不用主語(yǔ)，直接用動(dòng)詞開(kāi)頭．you are looking for是后置定語(yǔ)，修飾 the webpage，翻譯的時(shí)候要放到前面去．這個(gè)句子是主系表結(jié)構(gòu)．is是系動(dòng)詞．故選A．

點(diǎn)評(píng) 祈使句是用來(lái)表示命令、請(qǐng)求、建議、號(hào)召等的句子，謂語(yǔ)動(dòng)詞用原形，句末用感嘆號(hào)"！"或句號(hào)"．"．朗讀時(shí)一般用降調(diào)．
祈使句主語(yǔ)是you，you常省略，但如果要特別強(qiáng)調(diào)對(duì)方或表達(dá)某種強(qiáng)烈的情緒時(shí)可以有主語(yǔ)或稱(chēng)呼語(yǔ)．
Be quiet．請(qǐng)安靜．
You be quiet！你給我安靜點(diǎn)！

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