1．請(qǐng)根據(jù)所給材料，完成寫作任務(wù)．
1．火星上有生命嗎？不道，我們能成功登上火星嗎？那完全取決于科學(xué)技術(shù)的發(fā)展．
2．目前為止，我們雖然對(duì)火星有點(diǎn)了解，但根本不夠．這影響我們?cè)谀抢锷睿?br />3．既然火星與地球完全不同，如果我們計(jì)劃有朝一日去火星，我們就要帶上氧氣，食物，衣服．
注意：1．詞數(shù)100左右．
2．詞匯：depend on，prevent from，now that．
分析 高分句型：
句型一：
It might be about 50 degrees above zero at noon and 100 degrees below zero at night，Which ①prevents us from living②there．
它中午的溫度可能在50度左右，晚上則到了零下100度，這使得我們沒法在那里生活．
①本句為非限定性的定語從句，關(guān)系代詞which指代前面整個(gè)句子的內(nèi)容，在該從句中作主語．
②prevent sb．from doing sth．意為：阻止某人做某事．
句型二：
Now that Mars is quite different from our earth，if we were to go to Mars one day，we should have to take along our own oxygen，food，clothing as well shelter．
既然火星與我們的地球完全不同，如果有一天我們要去火星，我們就得帶上自己的氧氣、食物、衣服和住所．
本句為if條件虛擬句；從句（用were to）表示與將來事實(shí)相反的假設(shè)，主句應(yīng)使用should+動(dòng)詞原形．
解答 We don't know whether there is life on Mars．Can we land on Mars successfully？That all depends on the development of science and technology．（描述第一個(gè)要點(diǎn)）Until now we have known a little about Mars，but that's not enough．There is almost no oxygen on Mars．It might be about 50 degrees above zero at noon and 100 degrees below zero at night，Which prevents us from living there．【高分句型一】（描述第二個(gè)要點(diǎn)并補(bǔ)充說明火星與地球的不同）Now that Mars is quite different from our earth，if we were to go to Mars one day，we should have to take along our own oxygen，food，clothing as well shelter．【高分句型二】（描述第三個(gè)要點(diǎn)）
點(diǎn)評(píng) 提綱作文實(shí)際上是對(duì)考生的思路以及文章的寫作范圍給出了明確的限定，因此考生在寫作時(shí)，應(yīng)在保證內(nèi)容要點(diǎn)齊全的同時(shí)進(jìn)行合理而又緊扣主題的發(fā)揮；要根據(jù)提綱全面構(gòu)思文章內(nèi)容，根據(jù)內(nèi)容構(gòu)思詞語和句型結(jié)構(gòu)；注意句子的時(shí)態(tài)，注意詞語的豐富和句型的多樣性．
