词语辨析：holiday(holidays),leave,vacation,off都有“假日(期)”的意思，但含义用法并不相同。
holiday(holidays)一般指“休假”
Tom and I are going to have a holiday. 我和汤姆准备去度假。
I've already had my holidays this year. 我今年已经度过假了。
During a holiday in Sweden,I found this note on my car.
在瑞典度假期间，我在我的车子上发现了这张字条。
Postcards always spoil my holidays.
明信片总是弄得我过不好假日。
My holidays passed quickly,but I did not send any cards to my friends.
我的假日过的很快，但是我一张明信片也没有寄给朋友。
注：have a (或one's)holiday 度假，during a holiday
在一次假期中。这种用法的holiday
总用单数形式，但并不只是“一天”假。 复数形式的holidays
泛指“假日”，如summer holidays 暑假。但“Sunday is a
holiday ”中的holiday 却是“一天”的假。
She has gone to Canada on vacation. 她到加拿大去度假。 (=
holiday)
The city was covered with holiday clothes.(喻义时只能用holiday,不能用vacation.)(vocation职业、天命)
holiday一两天的假/holidays长假/vacation一般不用复数，另有“(法庭)休庭期”之意。
leave 指“请假”，被批准后离开自己的工作的一段时间
He stays at home on sick leave. 他请了病假呆在家里。
He asked for a six months' leave. 他请了6个月的假。
She's been given sick/ compassionate/ maternity leave
她获准休病假/事假/产假。
而 vacation
在英国指大学的寒暑假或法定不工作的日子，美国可指任何假日（期）
The students are planning how to spend their summer vacation.
这些大学生在计划着怎样过暑假。
Mr. Fuller is on vacation now. 费勒先生在度假。
So as to be away from work or duty:离开工作或职责：
They took a day off.他们休息一天take a day off休假一天
Spent away from work or duty: 休假的在离开职责中度过：
My off day is Saturday.我的休息日是星期六
an off day休假日off hours空闲的时间
three days off an off season淡季
for the first time/ the first time(名词可以作状语,如the
moment...)
IT信息技术;［资讯科学］Information Technology的缩写。
Stop acting as though you were it.不要夜郎自大。
it[it]pron.[指心目中或上下文中的人或事物]这, 那, 它
Go and see who it is.去看看是谁。It's me.[口](=It is I.)是我。
[指无生命的东西, 也可指动物与性别不详的幼儿]它
They got a baby and it was a ten-pounder.
他们生了个十磅重的婴孩。
[作无人称动词的主语]表示“时间、气候、距离等”
[作先行代词, 引导后面的短语或从句]这, 这一点
It is no use trying.试也无用。
It is certain that we shall succeed.我们一定会成功。
[作先行代词, 用在强调句型中]
It was here that I first met him.这就是我初次与他见面的地方。
It is I that am fortunate.幸运的是我。
[接在某些由名词变来的动词后, 无实义,
构成习惯性动词短语]
[口语中用作某些动词或介词的含糊宾语]
Go it while you are young.趁你年轻努力干吧。
You'll catch it!你可小心点儿!(警告用语)
You are in for it.这下你可得干到底了(或这下你可要倒霉了)。
term n.学期, 期限, 期间, 条款, 条件, 术语
a term of office 任期 to get a term of seven years in prison 被判7年徒刑
He was made captain of the football team for a term of one year.
他被推选为足球队队长，任期一年。
名词；术语technical terms 专门名词，术语
If you agree to my terms -- free meals and good wages — I will work
for you.
如果你同意我的条件，免费用餐并给高薪，我就为你工作。
in the long term从长远的观点看in the short term从眼前的观点看
on equal terms同等
The chairman dismissed the meeting.主席宣布散会。
well[wel]n.井vi.涌出adj.健康的, 良好的, 适当的
adv.好, 满意地, 充分地, 彻底地, 有理地, 适当地,
夸奖地int.唔, 咳,嘿; 唷,好啦,喂, 好吧,喔; 那么n.好,
美满; 令人满意的事物I wish you well.愿你称心如意。
channel n.海峡, 水道, 沟, 路线,信道,频道vt.引导, 开导,
形成河道
The English Channel is between France and England.
英吉利海峡在英国和法国之间。
with regard to关于 With kind regards谨此致候
Give the family my best regards.祝您全家幸福
Please give my regards to your mother.请向你妈妈问候。
expressionn.表达, 表情, 脸色, 声调, 腔调, 措辞
read with expression有感情地朗读
chemist n.化学家, 药剂师 chemistry n.化学
chemical adj.化学的 n.[常pl.] 化学制品, 化学药品
camp n.野营，营地，兵营
introduce:The chairman introduced the speaker to the audience.
主席把讲演者介绍给听众。
使熟悉，带领提供给（某人）某事物的初步认识或初次经历：
introduced me to weightlifting.带领我认识举重
introduce a humorous note in a speech先讲几句幽默话作为讲演的开场白foreign
captial introduction引进外资 a letter of introduction介绍信
prefer vt.(preferred; preferring)宁可, 宁愿(选择); 更喜欢; (比较起来)喜欢...(而不喜欢...)(to)
prefer doing to talking喜欢做而不喜欢说
enjoy/practise/finish/keep/mind/can't help doing
practice n.实行, 实践, 实际, 惯例, 习惯, 练习, 实习,
开业
theory理论 social practice社会实践
practice , exercise , drill 都含“实践”、“练习”的意思。
practice 指“为一目的或使技能达到熟巧而进行体力或智力方面的反复实践”,
如:He does his practice on the violin every day.他天天练小提琴。We
must put our plans into practice. 我们必须将计划付诸实行。
exercise 指“体力或智力的反复运用以发挥力量或增进健康”,
如:grammatical exercises语法练习。floor exercises 自由体操
morning exercises早操
drill 指“反复不断地进行某种特殊练习,
以锻炼身心而养成正确的习惯”, 如:pattern drills句型操练。
result n结果；效果
As a result, there is often trouble in American families.
因此,美国家庭中常常会出现麻烦事。
成败；输赢结果the football results 足球赛的结果
The result of the game was five-nothing.比赛结果是五比零。
result vi.由...而造成(from)结果; 致使; 导致(in)
Nothing has resulted from his efforts.他的努力终成泡影。
Acting before thinking always results in failure.做事不先考虑总会导致失败。
every是指数目不确定的许多人[物]中间的每一个, 它的“总合”意义很重;each则指一定数目中的每一个,
“个别”意义较重。every只能用作形容词,
因此只有在与名词连用或构成复合词时,
才能用作主语或宾语;each可用作形容词, 也可用作代词,
直接作主语或宾语, 如:each of us, each of the students, each
student; every one of us, every student.
From each according to his ability, to each according to his work.
各尽所能，按劳分配。
There are new houses on each side of the street.街道两边有新楼房。
Each student in our class has a dictionary.我们班每位同学都有一本词典。
set about doing开始做，着手处理 set off出发，启程 (= set
out)
The children set off for school.孩子们上学去了。
set up建立（事业）；成立（组织）
set off,set out 这两个短语动词都有“出发”和“动身”的意思，都可以解释为start
to move或begin a journey。
然而set off的原义是使爆炸(cause to explode)
set out 的原义是着手做(出发, 开始)
注：set out 在用来表示“着手做”时，后面总是跟动词不定式。
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