It 作形式主语. 动名词作主语时.尤其是动名词词组较长时.为了保持句子平衡.通常用先行词 it 作形式主语.而将真正的主语放在句末. 例:Making plans is eas——青夏教育精英家教网—

摘要：It 作形式主语. 动名词作主语时.尤其是动名词词组较长时.为了保持句子平衡.通常用先行词 it 作形式主语.而将真正的主语放在句末. 例:Making plans is easy. It's easy making plans. 课本句:Going to bed early is good.

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1.They heard a message from a spacecraft.(用just改为现在完成时态形式)

They just a message from a spacecraft.

2.Have you got a letter from Lucy?(改为同义句)

Have you Lucy?

3.To understand the problem is very difficult.(用it作为形式主语)

very difficult understand the problem.

4.I came here two days ago.(改为同义句)

I here two days.

5.Her mother has been to Hong Kong several times.(就画线部分提问)

has her mother been to Hong Kong?

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…it's important to know the right and wrong things to do.

…it's OK to make a lot of noise in a restaurant.

…it's common to leave tips…

在以上几个句子中，it为形式主语，不定式短语to know…, to make…, to leave…是句子真正的主语。请运用该句型写出五个句子。

__________________________________________________

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句型转换（每空一词）。
1. They heard a message from a spacecraft. (用just改为现在完成时态形式)
    They just _______ a _______ message from a spacecraft.
2. Have you got a letter from Lucy?(改为同义句)
    Have you _______ _______Lucy?
3. To understand the problem is very difficult.(用it作为形式主语)
     _______ _______very difficult _______understand the problem.
4. I came here two days ago.(改为同义句)
    I _______ _______ here _______ two days.?
5. Her mother has been to Hong Kong several times.(就画线部分提问)
   _______ _______ _______ has her mother been to Hong Kong?

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阅读理解

　　Pets in America

　　Americans love pets.And it's not just puppy love.①Many　pet owners treat their furry friends as a part of their familyndline.Sometimes they buy their pets toys.If they have an eye for fashion,pet owners can dress their pets in stylish clothes.You might say Americans treat their pets as they treat their children sometimes even better.

　　In America,there are more households(家庭)with pets than those with children.②At least 43 percent of the U.S.homes have petsndline.And the all time favorites are cats and dogs.Americans sometimes have strong feelings about whether dogs or cats make better pets.“Dog people”and“cat people”often enjoy friendly rivalries(较量).

　　③Leading a dog's life in America isn't such a bad ting.Many grocery(食品杂货店)stores sell pet food to owners who are eager to please their pets.In Houston,Texas,dogs can have their dinner delivered to their homes,just like pizza.Pets can even accompany their owners on vacation.Fancy hotels are beginning to offer rooms to both men and pets.Furry guests at Four Seasons Hotels can enjoy meals served on fine china and sleep in soft beds.

　　④ To Americans pets are not just proper(财产）,but a part of their family.　　

　　根据短文内容,完成下列各题。

(1)

According to the passage.what does the“dog people”mean?

(2)

将①句变为被动语态：Their furry friends _____ _____ as a part of their family by many pet owners.

(3)

将②句译成汉语：

(4)

将③句改写成it作形式主语的句式：

　　It isn't such a bad thing ____ ____ a dog's life in America.

(5)

将④句译成汉语：

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句型转换

To finsh the work on time is very difficult．(用it作形式主语)

________ is very difficult ________　________ the work on time．

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