高三英语备考知识点1

look up the dictionary

汉语中的“查字典”，说成英语通常是 look up sth in a dictionary 或 consult [refer to] a dictionary。如：

I refer to the dictionary frequently. 我经常查阅词典。

You can look the word up in the dictionary. 你可以在词典里查这个词。

He often consulted a dictionary when he read the book. 他读这本书时经常查字典。

I looked the word up in the dictionary to refresh my memory of its exact meaning. 我查了词典，以便弄清这个词的准确意思。

I often look up the words I don’t know in the dictionary or on the Internet. 我经常在字典里或网上查找我不认识的单词。

“Is that the correct spelling?” “I don’t know—look it up in a dictionary.” “那是正确的拼写吗?”“我不知道——查查词典吧。”

I didn’t know what “loquacious” meant and had to look it up in a dictionary. 我不知道loquacious这个是什么意思，所以只好查了词典。

有不少人认为英语习惯上不能直接说 look up the dictionary, 其实这种表达在英语中也可以用，只是比较少见而已。例如：

I spend more time looking up the dictionary than reading the book. 我读这本书时查字典的时间还多些。——摘自 L. G. Alexander 编《新概念英语》(外研社)

Look up the dictionary and explain the meaning of the italicized words. 查字典然后解释斜体词的意思。——摘自张汉熙编《高级英语》(商务印书馆)

高三英语备考知识点2

虚拟语气在一些特殊词中的使用或含蓄条件句

1.wish后的宾语从句。

与现在愿望不一致，用主语十过去时，例如：

I wi。hIwere you.

与过去愿望不一致，用主语+had+过去分词，例如：Iwish I had visited the White House whenI was in the States与将来愿望不一致，用主语+would (could)+原形。

2.It's time句型：当lt's tine后用that从句时应该为主i吾+should+动词原形或主语十过去时，例如：It，s time thatyou went to school.或It's time that you should go to schooL

3- If only引起的感叹句相当于“How I wish+宾语从句”。

(l)If only he could come.他要能来就好了。

(2)If only I had known the answer.我要早知道答案就好了。

4.WOuld rather，as if(though)引导的从句也需使用虚拟语气，表示过去的情况用过去完成时，表示现在与将来的情况用过去时，例如：

(l)I'd rather you posted the letter right away.

(2)She loves the children as if they were hers.

5.含蓄虚拟条件句含蓄条件句是指句中没有明显的虚拟条件句，而是利用其他手段来暗示存在虚拟条件。但是这类隐含式虚拟条件句往往都可以转化为if引导的条件句。常用来表示含蓄虚拟条件的手段有：

(1)介词或介词短语。如but for，but that，without,in case of, under more favorable condition等。

(2)连词。如so that, unless, in case, supposing,lest, provided(倘若……)，for fear that(唯恐)，in orderthat, on condition that, if only(要是……就好了)等。

注意：lest, for fear that和in case引起的从句中谓语动词多用should+动词原形，但也可以不用虚拟语气，而用动词的陈述语气形式。例如：The foreign teacher spokeslowly in case we misunderstood him这位外籍教师说得很慢以免我们误解。

(3)通过上下文及内在含义，句中往往有but,otherwise, unfortunately等类似转折词。

without, but. but for, otherwise引起的短语或句子常暗含着含蓄条件。例如：

①Without you,1 would never know him

②But for your oooperation, we wouldn't have done it

③But that she was afraid, she would have said no. .

④i would be most glad to help you, butI am busy now.

⑤I would have come to the party yesterday, but ljwas working.

⑥I am busy now, otherwise l would do you the favor!

高三英语备考知识点3

一、就近一致原则

1.由or，not only...but also...，neither...nor...，either...or...，whether...or...，not...but...等连接两个或两个以上的并列主语时，通常根据就近一致原则，谓语动词要与离它最近的主语在数上保持一致。

Neither his parents nor I am able to persuade him to change his mind.

2.here/there引导一个句子而主语又不止一个时，通常根据就近原则，谓语动词要与离它最近的主语在数上保持一致。

Here is a ruler，a few pencils and two copybooks.

二、意义一致原则

1.谓语动词必须用单数的情况

(1)表示学科的名词以及works(工厂)，news(消息)等作主语时，虽然本身为复数形式，但表示单数意义时，谓语动词仍用单数。

Politics is his favorite subject.

(2)表示某些组织机构的名词、书/报名、国名、地名等作主语时，虽然形式上是复数，但所表示的意义是单数，所以谓语动词用单数。

Do you know when the United Nations was set up?

2.谓语动词必须用复数的情况

表示总称意义的名词，如people，police，public，cattle等作主语时，谓语动词用复数。

The police are searching for the murderer.

3.谓语动词的形式依据主语表示的意义而定

(1)集体名词，如family，class，group，team，club，company，government，population等作主语时，谓语动词的形式根据其在语境中表示的意义而定。当其表示集体意义，强调整体概念时，谓语动词用单数;当其表示集体中各个组成部分，强调个体概念时，谓语动词用复数。

As far as I know，his family is not very large but the family are all music lovers.

(2)“the+形容词/分词”表示“一类人”时，谓语动词用复数。

The poor were looked down upon in the old days.

三、语法一致原则

1.由and连接的两个名词作主语

(1)“a/the+名词单数+and+名词单数”表示一个人(双重身份)，谓语动词用单数。

The teacher and poet often gives lectures around the city.

(2)“a/the+名词单数+and+a/the+名词单数”表示两个人，谓语动词用复数。

The teacher and the poet have just arrived.

(3)“every+名词单数+and+every+名词单数”表示每一个人，谓语动词用单数。

Every boy and every girl has the right to receive education in our country.

(4)通常由两个部件组成的物品如：a knife and fork (一副刀叉)等作主语，谓语动词用单数。

Bread and butter is not to his taste.

2.表示时间、数量、长度及价格的名词，尽管有时是复数形式但常被看作是一个整体，谓语动词用单数形式。

Is fifty pounds enough?

3.“分数/百分数+of+名词”作主语时，谓语动词的形式根据of后的名词的形式来定，如果名词是可数名词复数，谓语动词用复数形式;如果名词是单数可数名词或不可数名词，谓语动词用单数形式。

Two-thirds of the books are about science.

Only 30% of the work was done yesterday.