723.school(名)学校
Which school dose your child go to?你的孩子在哪所学校念书？

724.sea(名)海洋
We saw many boats sailing on the sea.我们看到许多条船在大海上航行。

725.season(名)季节、时节
When does the rainy set in here?这儿的雨季是从什么时候开始的？

726.seat(名)座位(动)坐下
(名):Excuse me, is this seat taken?不好意思，请问这座位有人吗？
(动):He seated himself in a chair.他在椅子上坐下。

727.second(形)第二的
She lives on the second floor.她住在二楼。

728.see(动)看、见
不规则变化saw，seen
He was seen to come out.有人看见他走出来。

729.seldom(副)很少、不常
She seldom showed her feelings,她很少表露感情。

730.sell(动)卖、销售
不规则变化sold, sold
He sold me his camera.他把照相机卖给我。

731.send(动)送、寄
不规则变化sent, sent
She sent me a Christmas card.她寄给我一张圣诞贺卡。

732.senior high school(名)高中
I have passed the senior high school Certificate before leaving school,我持有高中毕业证书。

733.sentence(名)句子；判决
The structure of the sentence is strange.这句子的结构很奇怪。
The sentence was eight years in prison.这个判决为8年徒刑。

734.September(名)九月
S需大写
It's September 22.今天是9月22日。

735.serious(形)严肃的、庄重的
He was kind and affectionate, but very serious.他仁慈、亲切，但非常严肃。

736.seven(形)七的
There are seven people in the boat,船上有七个人。

737.seventeen(形)十七的
We covered seventeen miles on foot.我们步行了十七英里。

738.seventh(形)第七的
This is the seventh type.这是第七种。

739.seventy(形)七十的
We had seventy acres of good irrigated land.我们有七十英亩灌溉良田。

740.several(形)几个的
He was seriously injured in the accident and died several days later,他在那次事故中受了重伤。几天后就死了。

741.shall(助)将于
I shall be thirty next year.明年我就三十岁了。

742.shape(名)样子、形状
The sculptor worked the clay into the shape of a woman.雕刻家将泥土捏成了一个妇女的形状。

743.share(名)一份、部分(动)分享
(名):I have done my share of the work.我已经做了我分内的工作。
(动):We shared Mandy's joy.我们分享了曼蒂的喜悦。

744.she(代)她
She is my mother.她是我母亲。

745.sheep(名)羊、绵羊
He keeps a flock of sheep.他养了一群羊。

746.ship(名)海船、舰(动)装上船、用船运
(名):They crossed the Pacific by ship.他们乘船横渡太平洋。
(动}:The goods were shipped to the island last week.货物于上周用船运往该岛。

747.shirt(名)男衬衫、衬衫
My shirt is blue.我的衬衫是蓝色的。

748.shoe(名)鞋
Mother bought her a pair of tennis shoes.母亲给她买了一双网球鞋

749.shop(名)店、商店
美store
She works at a flower shop.她在一家花店工作。

750.shopkeeper(名)店主、零售商
That shopkeeper cheats his customers.那个店主欺骗顾客。

751.short(形)短暂的、短的
反义词long
I'm short of money this week.我这个星期缺钱。

752.should(助)应该
按原形动词
He should work harder.他应该更加努力工作。

753.shoulder(名)肩部
Too much work has been placed on his shoulder.加在他身上的工作太多了。

754.show(名)展览会(动)展示、上演
(名):We visited an art show this morning.今天上午我们参观了一个画展。
(动):She shows great interest in American drama.她对美国戏剧很有兴趣。

755.shy(形)害羞的
Small children are often shy of anyone they do not know.小孩子在陌生人面前常常是怯生生的。

756.sick(形)反胃的、生病的
同义词ill
He is sick with influenza.他患了流行性感冒。

757.side(名)侧面、边
An old man was sitting on the side of the road.一个老人坐在路边。

758.sidewalk(名)人行道
英pavement
She slipped and almost fell on the icy sidewalk.她滑了一下，几乎跌倒在结冰的人行道上。