beforehand是什么意思
beforehand
事先
双语对照
beforehand[英][bɪˈfɔ:hænd][美][bɪˈfɔ:rhænd]
adv.提前; 事先，预先;
adj.提前的; 预先准备好的;
例句:
1.
Anything you want to tell beforehand?
你还有什么想先说的吗?
2.
We had it ready a week beforehand.
我们提前一星期就准备好了。
3.
Chicken livers: mr. thompson adds in small bits of chicken liver, braised beforehand to remove its gaminess.
鸡肝：汤普森在这道炖菜中加入了小块的鸡肝，这些鸡肝被事先炖过以去除腥味。
4.
Lf you had planned to change pilots, why was there a selection beforehand?
既然早就打算换飞行员那为什么还要搞选拔？
5.
The administration used the last g-20 summit in june to prod china to announce beforehand that it would adopt a more 'flexible' currency policy, rather than tying the yuan tightly to the dollar.
奥巴马政府利用上次6月召开的20国峰会，力促中国在峰会之前宣布将采取更为灵活的汇率政策，让人民币不再盯住美元。
beforehand和in advance 的区别?
in advance 时间上 预先。
"when you pay in advance you receive a discount";
beforehand 除了有时间上 预先，超前外，还有非时间上 的，例如 “需要”上 预先，超前。 另外有过早的意思。
She is always beforehand with the rent。她总是早早把租金准备好。
We were aware of the problem beforehand. 我们事先就知道有这个问题.
propose和advance的区别
一、有建议的意思。advise、propose也有此意，请比较它们用法的异同：
1）都可接名词做宾语 She suggested/advised/proposed an early start。她建议早一点出发。 We suggested/advised/proposed a visit to the museum the next day。我们建议明天去参观博物馆。
2）都可接动名词做宾语 I suggested/advised/proposed putting off the sports meet。我建议将运动会延期。 They suggested/advised/proposed waiting until the proper time。他们建议（我们）等到恰当的时机才行动。
3）都可接that宾语从句，that从句用should+动词原形，should可以省略。 She suggested/advised/proposed that the class meeting （should） not be held on Saturday。她建议班会不要在星期六举行。 We suggested/advised/proposed that he （should） go and make an apology to his teacher。我们建议他去向老师道歉。
4）advise可接动词不定式复合宾语，propose可接不定式做宾语。 I advised him to give up the foolish idea。＝I suggested/proposed his/him giving up the foolish idea。我建议他放弃那愚蠢的念头。（suggest和propose在口语里可接动名词的复合宾语）。 We proposed to start early。＝We proposed starting early。我们建议早一点出发。（接不定式不用suggest和advise）
二、 有提出的意思。 如：He suggested a different plan to his boss。他向老板提出了一个不同的计划。 Xiao Wang suggested a way to solve the problem。小王提出了一个解决这个问题的办法。
三、 有暗示、表明的意思，其主语往往是事物，而不是人。
1）接名词或动名词做宾语。 The simple house suggested a modest income。这座简朴的房子表明（房主的）收入并不高。 Her pale face suggested bad health。她脸色苍白，看来身体不好。 The thought of summer suggests swimming。一想到夏天，就使人们联想到游泳。
2）接宾语从句，从句用陈述语气。如： The decision suggested that he might bring his family。 这个决定表明他可以把家属带来。 The expression on his face suggested that he was very angry。他脸上的表情表明他很生气。 四、 在主语从句It is suggested that及名词suggestion后面表示具体建议的表语从句、同位语从句都应用should+动词原形，should可以省略。如： It was suggested that we （should） give a performance at the party。人们建议我们在晚会上表演节目。 His suggestion was that the debts （should） be paid off first。他的建议是先把债务还清。
The doctors made a suggestion that the new hospital （should） not be set up on the hill。医生们建议不要把新医院建在山上。
求助关于'which'的用法
一、定语从句的定义。
用作定语的从句叫做定语从句(attributive clause)。定语从句通常皆置于它所修饰的名词(或代词)之后，这种名词(或代词)叫做先行词(antecedent)。引导宾语从句的关联词为关系代词和关系副词。关系代词在定语从句中可用作主语、宾语、定语等;关系副词在定语从句中只用作状语。如：
The student who answered the question was John. 回答问题的那个学生是约翰。(who answered the question是关系代词who引导的定语从句，用以修饰who先行词student，who在从句中用作主语)
I know the reason why he was so angry. 我知道他这么生气的原由。(why he was so angry是关系副词引导的定语从句，用以修饰why的先行词reason，why在从句中用作原因状语)
定语从句一般紧跟其先行词之后。如：
The room which served for studio was bare and dusty. 这个用作工作室的房间空荡荡的，布满灰尘。(关系代词which引导的定语从句紧跟其先行词room之后)
有时亦可与先行词分离。如：
A new master will come tomorrow who will teach you German. 明天要来一位新教师教你们德语了。(关系代词who引导的定语从句与其先行词master分离)
二、关系代词的用法。
用作关联词的关系代词有who，whom，whose，that，which等。who，whom，whose指人，who是主格，在从句中用作主语(在非正式英语中亦可用作宾语);whom是宾格，在从句中用作宾语;whose是属格，在从句中用作定语(有时亦可指物)。如：
The man who was here yesterday is a painter. 昨天在这里的那个人是位画家。(主格关系代词who在从句中用作主语)
The man who I saw is called Smith. 我见到的那个人名叫史密斯。(在非正式英语中who 代替了whom，亦可省去不用)
I know the man whom you mean. 我认识你指的那个人。(宾语关系代词whom在从句中用作宾语)
A child whose parents are dead is called an orphan. 失去父母的孩子叫做孤儿。(属格关系代词whose在从句中用作定语，指人)
I’d like a room whose window looks out over the sea. 我想要一个窗户面临大海的房间。(属格关系代词whose在从句中用作定语，指room，可代之以of which，但后者较为正式)
that在从句中既可用作主语，亦可用作宾语（在非正式文体中可省去）；既可指人，亦可指物，但在当代英语中多指物。如：
A letter that is written in pencil is difficult to read. 用铅笔写的信很难读。(关系代词that在从句中用作主语，指物)
The letter that I received from him yesterday is very important. 昨天他来的信很重要。(关系代词that在从句中用作宾语，指物)
Is he the man that sells eggs? 他是卖鸡蛋的那个人吗?(关系代词that在从句中用作主语，指人)
关系代词which在从句中可以用作主语和宾语，一般皆指物，在非正式文体中可以省去。
This is the book which has been retranslated into many languages. 这就是那本有多种译本的书。(关系代词which在从句中用作主语)
Where is the book which I bought this morning? 今天上午我买的那本书在哪儿?(关系代词which在从句中用作宾语，可省去)
which在从句中亦可用作定语和表语。如：
We told him to consult the doctor, which advice he took. 我们叫他去看医生，他听取了我们的劝告。(关系代词which在从句中用作定语)
The two policemen were completely trusted, which in fact, they were. 那两个警察完全受到信任，事实上真是如此。(关系代词which在从句中用作表语)
as，than，but亦可用作关系代词。如：
The two brothers were satisfied with this decision, as was agreed beforehand. 两兄弟对这个决定都满意，它事先已经他们同意了。(关系代词as在从句中用作主语，其先行词是this decision)
He was a foreigner, as I knew from his accent. 他是个外国人，我是从他的口音知道的。(关系代词as在从句中用作宾语，其先行词是前面的整个句子)
I never heard such stories as he tells. 我从未听过他讲的这类故事。(关系代词as与指示代词such连用，在从句中用作宾语，其先行词是such stories)
Her attitude to him was quite the same as it had always been. 她对他的态度同她惯常的态度完全一样。(关系代词as与指示代词same连用，在从句中用作表语，其先行词是same)
You spent more money than was intended to be spent. 你花的钱超过了预定的数额。(关系代词than在从句中用作主语，其先行词是money)
There are very few but admire his talents. 很少人不赞赏他的才干的。(关系代词but在从句中用作主语，其先行词是few，but=who don’t)
关系代词在定语从句中用作介词宾语时，介词既可置于从句之首，亦可置于从句之末。但以置于从句之首较为正式。如：
This is the book for which you asked. 这是你所要的书。(关系代词用作介词for宾语，之首，即which之前)
This is the book which you asked for. 这是你所要的书。(介词for置于从句之末，which在此可省去)
关系代词who和that用作介词宾语时，介词须置于句末。如：
The people you were talking to are Swedes. 你与之谈话的那些人是瑞典人。(关系代词主格who用作介词to宾语时，介词to须置于从句之末，who中口语中可省去)
Here is the car that I told you about. 这儿就是我和你谈过的那辆汽车。(关系代词that用作介词about宾语，介词about须置于从句之末)
有时从句还有其它成分，介词则置于从句之中。如：
This is the boy who he worked with in the office. 那就是与他一道办公的那个男孩。
先行词指人时，关系代词既可用who，亦可用that。但关系代词在从句之中用作主语时，多用主格who。如：
Persons who are quarrelsome are despised. 好争吵者遭轻视。(除外persons，还有people，those，等皆多用who)
All who heard the story were amazed. 听到这个故事的人都感到吃惊。(代词如he，they，any，all，one等之后多用who)
I will pardon him who is honest. 我愿意宽恕他，他是诚实的。(描述性定语从句用who)
I think it is you who should prove to me. 我认为是你应该向我提出证据。(在强调结构中多用who，who在此可省去)
Who is not for us is against us. 谁不赞成我们就是反对我们。(缩合连接代词who为可代之以that)
在下列一些情况中则多用that。如：
)He was the man that the bottle fell on. 他就是瓶子落在其身上的那个人。(此处常用that作宾语指人，亦可用whom)
He is a man that is never at a loss. 他是一个从未一筹莫展的人。(that常用于泛指人)
He was watching the children and parcels that filled the car. 我望着塞满车的孩子和包裹。(兼指人与物时须用that)
Who that you have ever seen can beat him in chess? 你曾见过谁能在棋艺上打败他?(避免与先行词who重复时应用that)
That’s the same man that asked for help the day before yesterday. 这个与前天求援的是同一个人。(先行词前有指示代词same时应用that)
He is not that man that he was. 他已不是过去的他了。(that常用作表语)
I knew her father for the simplest, hardest working man that ever drew the breath of life. 我早知她的父亲是一个世上最简朴最努力工作的人。(先行词前有形容词最高级、序数词或only等词时应用that)
先行词指物时，关系代词that与which往往可以互换。但在下列情况中多用that。如：
All that glitters is not gold. 闪光的东西不都是金子。(不定代词包括复合词something等多后接that)
It was the largest map that I ever saw. 那是我所看见过的最大的地图。(前有形容词最高级等的先行词之后多用that)
It was liberation that brought about a complete change in his life. 是解放给他的生活带来了彻底的改变。(强调结构用that)
There is a house that has bay windows. 有一栋房子有凸出的窗户。(that在此表固有的特点)
The distance that you are from home is immaterial. 你离家的距离是不足道的。(在限制性定语从句中关系代词用作表语应用that，在描述性定语从句中则应用which)
Which was the hotel that was recommended to you? 哪一个是推荐给你的旅馆?(这里用that显然是为了避免重复which)
在下列情况中则多用which。如：
Larry told her the story of the young airman which I narrated at the beginning of this book. 拉里把我在书本开关叙述过的那个关于一个青年飞行员的故事讲给她听。(离先行词较远时常用which)
A store should keep a stock of those goods which sell best. 商店应存在最畅销的货物。(“those+复形名词”之后多用which)
I have that which you gave me. 我有你给我的那个。(which比较正式，在非正式英语中也可用that)
Beijing, which was China’s capital for more than 800 years, is rich in cultural and historic relics. 北京曾是八百多年的中国首都，有很丰富的历史文物。(描述性定语从句一般皆用which)
This is the one of which I’m speaking. 这就是我所讲的那个。(介词之后须用which)
希望我能帮助你解疑释惑。
previously和beforehand还有in advance的区别及用法?
previously
adv. previous的变形
previous ['pri:vjəs]
adj.
先的；前的；以前的
[口语]过早的；过急的；太早的
adv.
在前，在先，在…以前
近义词: preceding , antecedent
反义词: following
短语:
previous to 在…以前；在…之前
This includes the previously discussed input and output devices.
这包括先前被讨论的输入和输出设备。
是副词, 先前.
beforehand
beforehand [bi'fɔ:hænd]
adv.
事前，事先，预先
提前地，提早，超前地
预期
以前
adj.
提前的；过早的
先发制人的；赶在前面的
早做准备的，预先准备好的
短语:
be beforehand with
预先，事先
提前
be beforehand with the world 手头有钱的，手边宽裕的，手头备有应急用钱的
Did you apply for the interview beforehand?
你事先申请来这里采访了吗？
这个是"事先"
in advance
在前面
预先，事前，提前
You can prepare the interview questions in advance.
你可以提前准备一下面试的问题。
提前.
意思是有差别的.
beforehand和in advance 的区别?
in
advance
时间上
预先。
"when
you
pay
in
advance
you
receive
a
discount";
beforehand
除了有时间上
预先，超前外，还有非时间上
的，例如
“需要”上
预先，超前。
另外有过早的意思。
She
is
always
beforehand
with
the
rent。她总是早早把租金准备好。
We
were
aware
of
the
problem
beforehand.
我们事先就知道有这个问题.
