定冠词the与指示代词this,that同源,有“那(这)个”的意思。
1)特指双方都明白的人或物:Take the medicine.把药吃了。
2)上文提到过的人或事:He bought a house. I’ve been to the house.
3)指世上独一物二的事物:the sun, the sky, the moon,the earth(敲黑板,这个是经常会在选择题中考到的知识点)
4)单数名词连用表示一类事物,如:the dollar 美元;the fox 狐狸;
5)用在序数词和形容词最高级,及形容词only, very, same等前面:
Where do you live?I live on the second floor.你住在哪?我住在二层。
6)与复数名词连用,指整个群体:
They are the teachers of this school.指全体教师)
They are teachers of this school.(指部分教师)
数次的用法
1)倍数表示法
a. 主语+谓语+倍数(或分数)+ as + adj. + as
I have three times as many as you.我有你三倍那么多。
b. 主语+谓语+倍数(分数)+ the size (amount,length…) of…
The earth is 49 times the size of the moon.地球是月球的49倍。
c. 主语+谓语+倍数(分数)+ 形容词(副词)比较级+ than…
The grain output is 8 percent higher this year than that of last year.
d. 还可以用by+倍数,表示增加多少倍
The production of grain has been increased by four times this year.
2)分数表示法
构成:基数词代表分子,序数词代表分母。分子大于1时,分子的序数词用单数,分母序数词用复数:
1/3 one-third ;3/37 three and three-sevenths
连词主要可分为两类:并列连词和从属连词。
并列连词用来连接平行的词、词组和分句。
如:and, but, or, nor, so, therefore, yet, however, for, hence, as well as, both…and, not only…but also, either…or, neither…nor, (and)then等等。
比较so和 such
such 是形容词,修饰名词或名词词组。
so是副词,只能修饰形容词或副词。so 还可与表示数量的形容词many,few,much, little连用,形成固定搭配。
so + adj. such + a(n) + n.
so + adj. + a(n) + n. such + n. (pl.)
so + adj. + n. (pl.) such +n. (pl.)
so + adj. + n. [不可数] such +n. [不可数]
so foolish ;such a fool
so nice a flower;such a nice flower
so many/ few flowers;such nice flowers
so much/little money;such rapid progress
so many people ;such a lot of people
about大约..., after在…以后, at在… (时刻), before在…以前, by到…为止, during在…期间, for有…(之久), from从…(时)起, in在(上/下午);在(多久)以后, on在(某日), past过了…(时), since自从…(至今), through 贯穿…(期间), till直到…时, until直到…时, to到(下一时刻), ever since从那时起至今,at the beginning of在...开始时 ,at the end of在...末 , in the middle of在...当中 ,at the time of在...时