1) It’s our duty to save water（節(jié)約水是我們每個(gè)人的責(zé)任。）
　　As we know , water is very important to man, （我們知道，水對(duì)人類來說是非常的重要。）we can’t live without water. （沒有水我們就不能生存。）The amount of water which is suitable to drink is less and less. （適合人類喝的水是越來越少了。）But some people don’t care about it .（但是有些人卻不關(guān)心或不在意。）They waste a lot of water in their daily life. （日常生活中他們浪費(fèi)很多水。）Even worse, they pour dirty water in to rivers.（更糟糕的是他們排放污水到河流里。） They throw rubbish into rivers , too. （他們還亂扔垃圾到河流理去。）Many rivers and lakes are seriously polluted.（很多河流湖泊已經(jīng)受到嚴(yán)重污染。） Something must be done to stop the pollution. （人類必須采取一些措施來制止污染。）Only in this way can we live happily.（只有這樣，我們才過得幸福開心。） If we don’t save water, the last drop of water will be a tear-drop of us.( 如果我們不節(jié)約水，那么最后一滴水也許會(huì)是我們?nèi)祟惖难蹨I)