一、名词性从句
1. 主语从句
It + be + adj. (important, necessary, etc.) + that + 主语从句 例如:
It is important that we protect the environment.
It is necessary that you pay attention to your health.
2. 宾语从句
主语 + 谓语 + that + 从句 例如:
I believe that he will pass the exam. They know that she is a talented singer.
部分动词后面可接不定式或宾语从句,含义相同,如:believe, think, expect, hope, want, wish, imagine, suppose, fear, suggest, order, prefer, advise, tell, remind, ask, teach, show等。
3. 表语从句
主语 + be + adj. (sure, certain, true, clear, etc.) + that/whether + 从句 例如:
The problem is that he doesn't have enough money.
The question is whether we should take immediate action.
部分形容词后面可以接不定式或表语从句,表示主观判断或意愿,如:glad, happy,
sorry, sad, surprised, shocked, unhappy, wise, certain, likely, possible, etc.
4. 同位语从句
名词 + that + 从句 例如:
The fact that she passed the exam made her happy. The news that he got a promotion pleased his parents.
二、形容词和副词
1. 形容词的比较级和最高级
比较级:主语 + be (am, is, are) + 形容词比较级 + than + 被比较的对象 例如:
She is taller than her sister.
This book is more interesting than that one.
最高级:主语 + be (am, is, are) + the + 形容词最高级 + 名词 例如:
He is the tallest boy in his class.
This is the most beautiful painting I have ever seen.
2. 常用的形容词和副词
beautiful, handsome, pretty, ugly, lovely, attractive, stunning, gorgeous, charming, cute, elegant, fashionable, stylish, glamorous, delightful, etc.
good, great, excellent, wonderful, fantastic, fabulous, amazing, awesome, splendid, terrific, marvelous, etc.
bad, terrible, awful, horrible, unpleasant, etc.
expensive, cheap, reasonable, affordable, etc.
fast, slow, quick, rapid, swift, etc.
loud, quiet, noisy, etc.
hard, easy, difficult, challenging, simple, complicated, complex, etc.
high, low, tall, short, long, big, small, huge, tiny, etc.
young, old, new, ancient, modern, etc.
3. 形容词和副词的用法
形容词可修饰名词,也可作表语
副词一般修饰动词、形容词或其他副词
三、倒装句
1. 完全倒装句
在以下情况下要使用完全倒装句:
a) 句首为表示地点、方式等的介词短语时 例如:
Under the tree were two cats.
In this way, we can solve the problem.
b) 句首为表示方位的副词或介词短语时 例如:
Here comes the bus.
Out rushed the students.
c) 句首为表示否定、副词only、hardly, seldom, never等时 例如:
Never have I seen such a beautiful sunset.
Not only does he play the piano well, but he also sings well.
d) 句首为so, neither, nor时 例如:
So busy was he that he forgot to eat lunch. Neither do I like English, nor do I like math.
2. 部分倒装句
在以下情况下要使用部分倒装句:
a) 句首为表示条件的介词短语时 例如:
Should you need any help, please let me know.
Had I known your address, I would have sent you a postcard.
b) 句首为表示时间的介词短语或副词短语时 例如:
At no time should you give up your dream. On no account can he stay out late.
四、虚拟语气
1. 条件句中的虚拟语气
a) “与事实相反的条件句”:如果对过去的情况进行虚拟,主句要用“动词的过去完成时”,从句用“动词的过去完成时”或“would/could/might + have + 过去分词”的形式。 例如:
If I had known it was your birthday, I would have bought you a present. If I had studied harder, I would have passed the exam.
b) “与现在事实相反的条件句”:如果对现在的情况进行虚拟,主句要用“动词的过去时”,从句用“动词的过去式”。 例如:
If I were you, I would go to the party. If I had more money, I would buy a car.
c) “与将来事实相反的条件句”:如果对将来的情况进行虚拟,主句要用“would/could/might + 动词原形”,从句用“动词过去时态”的形式。 例如:
If it rained tomorrow, we would stay at home. If you didn't hurry, you might miss the train.
2. 虚拟语气用于建议、命令、要求的宾语从句
建议:suggest, propose, advise, recommend, urge, etc. 动词 + 宾语从句(虚拟语气) 例如:
I suggest that he take a break.
He recommended that we visit the museum.
命令:demand, insist, order, decree, etc. 动词 + 宾语从句(虚拟语气) 例如:
The teacher insisted that we hand in the homework on time.
The king decreed that all the people should gather in the square.
要求:request, ask, require, etc. 动词 + 宾语从句(虚拟语气) 例如:
She requested that the meeting be postponed. They asked that we arrive early.
五、介词短语
介词短语用来表示时间、地点、方式、原因等,常见的有:
at + 时间:在某个具体时间 例如:
at 5 o'clock, at Christmas, at the moment, etc.
on + 日期:在某一天 例如:
on Monday, on New Year's Day, on his birthday, etc.
in + 季节、年份、月份:在某个季节、年份或月份 例如:
in spring, in 2022, in January, etc.
on + 星期几:在星期几 例如:
on Friday, on Sunday, etc.
in + 国家、城市:在某个国家或城市 例如:
in China, in Beijing, etc.
at + 具体地点:在某个地点 例如:
at home, at school, at the park, etc.
by + 交通工具:乘坐某种交通工具 例如:
by bus, by train, by plane, etc.
with + 人:和某人在一起 例如:
with friends, with family, etc.
for + 时间段:持续的时间 例如:
for two hours, for a week, etc.
of + 形容词:表示特点或性质
例如:
of great importance, of high quality, etc.
to + 动词:表示目的 例如:
to study hard, to have fun, etc.
六、固定搭配
1. 动词搭配
make + 名词/形容词:使产生某种状态或结果 例如:
make a decision, make a mistake, make trouble, make progress, etc.
take + 名词:进行某种行动 例如:
take a shower, take a walk, take a break, take a photo, etc.
do + 名词:做某种活动或工作 例如:
do homework, do housework, do exercise, do research, etc.
2. 形容词搭配
be + 形容词 + of + 名词:对某人或某事持有某种看法或评价 例如:
be fond of music, be proud of my achievements, etc.
be + 形容词 + with + 名词:形容某人处于某种情况或状态
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