【 思维体操 】
你能猜出下列谜语吗 ?
1 . What letter is a drink ?
2 . What letter is a part of the face ?
3 . What letter is an insect ?
4 . Which letter goes all around an is land ?
5 . What changes a pear into a pearl ?
6 . What is the most important thing in the world ?
7 . What is that which is seen twice in “every day”and four times in“every week”yet only once in“a year” ?
8 . Why is the letter B like fire ?
9 . Why is the letter F like a cows tail ?
10 . What part of London is in France ?
11 . Why is the letter G like the sun ?
12 . Why is the letter T like an is land ?
13 . Why is U the happiest letter ?
14 . Which letter is most useful to a deaf woman ?
15 . What letter in the alphabet and travel the greatest distance ?
16 . What is the end of everything ?
17 . In what way are the letter O and E neatly keep house a like ?
18 . What does the letter B do for boys as they grow up ?
19 . Why is a sewing machine like letter S ?
20 . Why is a false friend like the letter P ?
1 . T ( tea ) 2 . I ( eye ) 3 . B ( bee ) 4 . C ( sea ) 5 . L 6 . The letter E , because it is first in everything and everybody . 7 . Letter E . 8 . because it makes oil boil . 9 . Because it is at the end of beef . 10 . The letter N . 11 . Because it is the center of light . 12 . Because it is in the middle of water . 13 . Because it is always in the midst of fun . 14 . The letter A , because it makes HER HEAR , 15 . The letter D , because it goes to the end of the world 16 . The letter G . 17 . Both are always in order . 18 . As they grow older it makes them bolder . 19 . Because it makes needles needless . 20 . Because he is the first in pity , but the last in help .
三、智能显示
【 心中有数 】
单元语法发散思维
※ 含有情态动词的被动态
含有情态动词的被动结构是：情态动词 + be + 及物动词的过去分词。如：
We must find out the truth . → The truth must be found out .
These machine parts may be needed in our work .
Should an article be used here ?
These stairs are very dangerous . They should be repaired .
This lesson must be gone over again .
※ 被动语态与系表结构的区别
动词 be + 过去分词这个结构并不定都是被动语态结构，有时它可能是 be + 过去分词 ( 作表语 ) 的系表结构。因此：
be + 过去分词 ( 被动语态 ) 与 be + 过去分词 ( 作表语 ) 这两种结构的主要差别是：
①被动结构表示一个动作，带表语的结构表示主语的特点或所处的状态。如：
The library is now closed . ( 系表结构 )
It is usually closed at 6 . ( 被动结构 )
②被动结构后面可带 by + 实施动作者，而系表结构一般没有。如：
The glass is broken . ( 系表结构 )
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