请你观察下面的词组。注意词组中“a”和“an”的用法有何区别。

a book　　a bag　　a pencil

a photo　　an eraser　　an apple

a和an的用法区别：________________________

请你根据以下例句，总结出leave、hear、return、ask和hope的用法。

leave:

1)She's leaving for Shanghai on Tuesday.

2)We are leaving Shanghai on Thursday.

3)I can't leave my baby by herself.

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hear:

1)I hear that Thailand is a good place to go sightseeing.

2)She often hears the boy sing in the next room.

3)I can hear her crying.

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return:

1)You'll be relaxed when you return from your vacation.

2)You should return my English book.

3)He needs to return the books to the library.

________________________________

ask:

1)I want to ask you about your family.

2)She often asks me to help her with her English.

3)Ask the police for help when you are in trouble.

________________________________

hope:

1)I'm hoping the weather will be nice in the mountains.

2)They hope to go swimming this afternoon.

________________________________

请你根据以下例句，总结出play、come、have to、study和visit的用法结构。

　　play:

　　1)The children are playing with a ball.

　　2)Do you want to play football this weekend?

　　3)He is playing the piano.

　　4)They are watching a TV play.

　　________________________________

　　come:

　　1)How do you come to school?

　　2)Do you want to come to my birthday party?

　　3)Marie's birthday is coming soon.

　　4)Monday comes after Sunday.

　　________________________________

　　have to:

　　1)Does Dave have to do his homework now?

　　2)I can't join you because I have to help my mom.

　　3)Mary has to stay at home because her mother is ill.

　　4)He doesn't have to go there.

　　________________________________

　　study:

　　1)Does Rosie study English?

　　2)Please keep quiet t I'm trying to study.

　　3)She is studying the map.

　　4)Tom studies very hard.

　　________________________________

　　visit:

　　1)The students are visiting Uncle's factory.

　　2)My American friends are going to visit me next vacation.

　　3)They are on a visit to Shanghai.

　　4)Thank you for your invitation to visit next week.

　　________________________________

请你根据下面的例句，总结出give、get、need、believe和stay的用法结构。

give:

1)A sore throat can give you a fever.

2)You can give me some old books.

3)He often gives some money to his parents.

4)I leave my homework at home. I can give it to you tomorrow.

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get:

1)When spring comes, the days are getting longer and longer.

2)Don't get stressed out, It will make you sick.

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need:

1) His English isn't good. He need to work hard.

2)Your hair is too long and needs cutting.

3)－Must I finish my homework tonight?

－No, you needn't.

4)He need to work hard at English.

______________________________________

believe:

1)I believe you are a good student.

2)To see is to believe.

3)I don't believe she can fly to Beijing.

______________________________________

stay:

1)He often stays at home on Sundays.

2)It's important for us to stay healthy.

3)The temperature will stay above zero tomorrow.

______________________________________