【考例】My parents ________ doctors. 　　

A. both are　　 B. all are 　　C. are all　　 D. are both 　　

拓展：all表示"三者或三者以上全都"的意思，every指三个以上的人或物(含三个)，each指两个以上的人或物(含两个)。　

练习：用all,both,every,each填空

1) My brothers and I are ________l at school.

2) ________ student may have one book.

3) ________Tom and Jim are my good friends.

4) Three students are flying kites,they are________ in Class 1.

2. Tara works as hard as Tina. 塔拉学习和蒂娜一样努力。

as...as意为"与......一样......"，as...as中间接形容词或副词的原级。其否定结构not as/so...as意为"不如......"。

E.g. He is as tall as his father. 他和他爸爸一样高。

Tom gets up as early as Jim. 汤姆起得和吉姆一样早。

Lucy isn't as outgoing as Mary. 露西不如玛丽外向。

注意：(1) 其否定式为not as/so +adj./adv. +as。

E.g. This dictionary is not as/so useful as you think.

(2) 若有修饰成分，如twice, three times, half, a quarter等，则须置于第一个as之前。

E.g. Your bag is twice as expensive as mine. 你的包比我的贵一倍。

3. You can tell that Lisa really wanted to win, though.

不过，你能看得出来，丽萨确实想赢。

(1) win此处用作不及物动词，意为"赢；获胜"；win还可用作及物动词，意为"赢得；在......中获胜"，此时其后的宾语为比赛的项目、奖品或战争等。

E.g. He won the first prize.

Who won the race？

辨析：win与beat

① win表示"赢得；获胜"，用作及物动词时，其宾语为比赛的项目、奖品或战争等。 E.g. We won the basketball game.

② beat表示"打赢；战胜"，用于比赛时，其宾语为所战胜的对手。

E.g. Li Lei beat all the runners in the 100-metre race.