高中作文常用单词Physicalandmentalcondition(身体与精神状态)strong(强壮的)un/healthy(不健康/健康的)overweight/fat(肥胖的)thin(瘦的)near/short-sighted(近视的)mentallyunhealthy(精神不健全的)normal(正常的)abnormal(不正常的)energetic(精力旺盛的)unhealthyeatinghabit(不健康的饮食习惯)eatmuchjunkfood(吃太多的垃圾食品)等Stay/keephealthy/fit(保持健康)buildupone’sbody/improveone’s'health(强身健体)enoughsleep(充足的睡眠)takeregularexercise(进行有规律的运动)roperdiet(合理的.饮食)goodlivinghabits(良好的生活习惯)loseweight(减肥)removeheavyburdens(减轻负担)begoodfor/dogoodto(对…有益处)nutrition(营养),goondiet(节食)forma…habit(养成一个…的习惯)breatheinasmuchfreshair等。话题二:环境保护Pollute（污染）---pollutionWasteisscatteringhereandthere.（到处撒满了废弃物）protecttheenvironment(保护环境)sendoutsmokeandpoisonousgasesintotheair（散发出烟和有毒气体）cutdowntrees(砍伐树木)pourwastewaterintotherivers（把废水注入河流）Itisashametothrowrubbisharound.（乱扔垃圾是可耻的）formgoodhabitstoprotectthesurroundings（养成良好的习惯来保护环境）takeactivemeasurestoprotectrareanimals(采取积极措施保护稀有动物)takegoodcareofourforests（关心我们的森林）plantmoretreestoimprovetheenvironment（多植来改善环境）Theterriblepollutionhavedonegreatharmtousaswellastothesurroundings.(可怕的污染已经给我们自己还有我们的环境带来了很大的危害。)Weshoulddoallwecantopreventtheenvironmentfrombeingpolluted.Weshoulddoeverythingwecantopreventtheenvironmentfrombeingpolluted.Weshoulddowhatwecantopreventtheenvironmentfrombeingpolluted.Weshoulddoourbesttopreventtheenvironmentfrombeingpolluted.1.表示原因：1）Therearethreereasonsforthis2）Thereasonsforthisareasfollows.3）Thereasonforthisisobvious，thatis…Greatchangeshavetakenplaceinourlife.Therearethreereasonsforthis2.表示好处：1）Ithasthefollowingadvantages.2）Itdoesusalotofgood.3）Itbenefitsusquitealot.Booksarelikefriends.Theycanhelpusknowtheworldbetter，andtheycanopenourmindsandwidenourhorizons.Therefore，readingisofgreatbenefittous.3.表示坏处：1）Ithasmoredisadvantagesthanadvantages.2）Itisharmfultous.Televisioncanalsobeharmfultous.Itcandoharmtoourhealthandmakeuslazyifwespendtoomuchtimewatchingtelevision.4.表示重要、必要、困难、方便、可能1）Itisimportant（necessary，difficult，convenient，possible）forsb.todosth.2）Wethinkitnecessarytodosth3）Itplaysanimportantroleinourli