2767.singer(名)歌手
People besieged tha singer.
人们围住了那名歌手。

2768.single(形)唯一的；单身的
The child was the single survivor of the aircrash．
这孩子是那次空难中的唯一幸存者。

2769.singular(形)单数的
"One boy" is singular，two boys" is plural.
“一个男孩”是单数，“两个男孩”是复数。

2770.sir(名)先生
May I help you,sir?
先生，有什么需要我帮忙的吗？

2771.sister(名)姊妹
She was a sister to him.
对他来说，她像妹妹一样。

2772.sit(动)坐
不规则变化sat, sat
I'd rather sit in the circie than in the stalls.
我宁可坐楼厅也不要坐正厅前排。

2773.site(名)地点、场所
The construction site of a new school was a hive of activity.
这所新学校的建筑工地上一片繁忙的景象。

2774.six(形)六的
It iS six of one and half a dozen of the other.
半斤八两。

2775.sixteen(形)十六的
The building is sixteen meters tall.
这楼房16米高。

2776.sixteenth(形)第十六的
My parents lived on the sixteenth floor.
我的父母亲住在十六层楼上。

2777.sixth(形)第六的
I always believe my sixth sense．
我总相信我的直觉。

2778.sixty(形)六十的
She is sixty.
她六十岁了。

2779.size(名)尺寸；才气
The two books were the same size.
这两本书一样大小。

2780.ski(动)滑雪
No one here can ski.
这里没人会滑雪。

2781.skill(名)技巧
Reading and writing are diferents skills.
阅读和写作是不同的技能。

2782.skilled(形)有技巧的
She was skiiled enough in French to translate a novel.
她精通法语，足以翻译小说。

2783.skillful(形)巧妙的，熟练的
A smooth sea never makes a skillful mariner.
平静的大海造就不出熟练的水手。

2784.skin(名)皮肤
You can make shoes from the skins of animals.
你可以用动物的皮做鞋子。

2785.skinny(形)皮包骨的，消瘦的
You're skinny enough without going on a diet.
你不必节食就已经够瘦了。

2786.skirt(名)裙子
Your short skirt is inappropriate for a formal party.
你穿这条短裙去参加正式晚会是不恰当的。

2787.sky(名)天空
There were no clouds in the sky.
天空万里无云。

2788.sleep(动)睡
不规则变化slept, slept
I slept very badly last night．
昨天夜里我睡得很不好。

2789.slow(形)缓慢的、迟缓的
反义词fast
Einstein was said to be a rather slow learner in his boyhood.
据说爱因斯坦小时候学习迟缓。

2790.slowly(副)慢慢地
Negotiations were going slowly.
谈判进行得很缓慢。

2791.small(形)小的：微量的
反义词vast
Jack is very small for his age.
按他的年龄来说，杰克的个子显得太小了。

2792.smaller(形)较小的
反义词larger, vaster
My book is smaller than yours.
我的书比你的小。

2793.smart(形)聪明的
反义词Stupid
It is easy to teach smart studants.
教聪明伶俐的学生很轻松。

2794.smell(名)气味
The smell of garlic filled the kitchen.
厨房里弥漫着大蒜的味道

2795.smile(动)微笑
She smiled when she saw me.
她看见我时露出微笑。

2796.smoke(名)烟(动)抽烟
(名):There is no smoke without fire.
无风不起浪。
(动):Don't smoke too much.
别抽太多烟。

2797.snack(名)点心
She fixed us a snack.
她为我们准备了点心。

2798.snail(名)蜗牛
Snails and octopuses are molluscs．
蜗牛和章鱼是软体动物。

2799.snake(名)蛇
The child was frightened by the snake.
这小孩被蛇吓了一跳。

2800.snow(名)雪(动)下雪
(名):Snow covered the ground.
雪覆盖着大地。
(动):lt's snowing now.
现在正在下雪。

2801.snowy(形)多雪的
The snowy waather lastad the whole time when we were there．
我们在那里的整个期间一直都是下雪的天气。

2802.so(连)所以
The manager was ill so I went in her place.
经理病了所以我代她去。