一般將來時現在進行時一般過去時一般現在時現在完成時作文 一般將來時、現在進行時、一般過去時、一般現在時、現在完成時，用這五個失態各寫5個作文，60詞~

一般將來時現在進行時一般過去時一般現在時現在完成時作文 一般將來時、現在進行時、一般過去時、一般現在時、現在完成時，用這五個失態各寫5個作文，60詞~

可以參考新概念二的書，或是新概念一的書.把故事的情節變化一下就可以.

用一般現在時，現在進行時，一般過去時，一般將來時寫一篇8句話的小作文.作文題目是The weekend

The weekend
on weekends，I usually watch TV athome.SometimesI help my mom washdishes.LastSunday，I went to see amovie.Myfather bought me MP3 for my birthdaypresent.Andnow I am doing my
homework.Myyounger brother is playing computergames.Tomorrowis Sunday.I am going to go fishing with myfather.Wewill have a good time.

用一般過去時，一般現在時，現在完成時，過去進行時，寫4篇80字的英語作文.

一般過去時
A busy day
It was sunny and very hot today.I got up early and helped my parents cookbreakfast.ThenI washed the dishes and cleaned theroom.Aftera short rest I did my homework in themorning.Inthe afternoon I went swimming in the nearest swimming pool with myfriends.Itwas really cool to swim in such a hot day.I surfed the internet and read a storybookin the evening.I really had a busy and interesting day.
My busy day一般現在時
I usually have a busy day from Monday to Friday because I have to go to school.I get up early at 6:00.After breakfast I go to school bybike.Classbegins ateight.Weusually have four classes in the morning and three in the afternoon.I usually get home at five in theafternoon.Afterdinner I wash the dishes and then do myhomework.ThenI surf theinternet and read books.I don't go to bed until 10:00.
現在完成時
Swim In The Beach
I’ve been to the beach for manytimes.Eachtime i went there，I have many different feelings.
One day I went there with my parents，we looked at the oceantogether.Weran on the beach，swam in theocean.Wereally had fun.
When I went there with my firends，we played water polo in the oceantogether.Weplayedhappily.Ourfriendship became very good.
The ocean is really beautiful，I like swimming in the ocean.
When I look at the ocean in nights.I have different feelings.I feel the world is really beautiful.I like the blue ocean.I will put my best memory on it.
Love in the rain過去進行時
That day，I was going out to buy a book，it was very hot outside，let me hard to breathe .after I paid for the books and was going back to my home，the day just like a changed face，it was raining cats and dogs.
I was hurrying to find a place to shelter from the rain，holding tightly the book in myarms.Whatshall I do It was raining heavily，how can I get back？Then I heard a voice like the sunlight:“It's your house far from here May I send you home？”，I looked up and found it is an uncle，from his clothes I see that he is a volunteer，On the way home，he andI talked very happy，finally，with his help，I got home.
I was looking at his leave of figure，I felt very glad，that I believed，if there were more and more people just like him，our country will be stronger and more prosperous
字數不少啊.

有理數加减（+五分之二）-（-五分之三

=1
原式=2/5+3/5

（-三分之二）-（-二分之一）+（-五分之二）-（+四分之三）有理數加减

（-三分之二）-（-二分之一）+（-五分之二）-（+四分之三）
=（-6分之4）-（-6分之3）+（-五分之二）-（+四分之三）
=（-6分之1）-五分之二-四分之三
=-60分之10-60分之24-60分之45
=-60分之34-60分之45
=-60分之79

把有理數加减混合運算轉化為有理數和的形式是利用了（）

利用了相反數的性質
因為减去一個數=加上這個數的相反數

已知兩數的積是1，且其中一個數是-二又七分之三求另一個數

已知兩數的積是1，且其中一個數是-二又七分之三求另一個數
-7/17

已知兩個數的積是1其中一個數是負二又七分之三求另一個數

 ；

兩數的積是1，已知一個數是-2又3分之1，求另一個數.
急

2L:-2又三分之一等於-7/3？
1/（-2又3分之1）=1*（-3/7）=-3/7

兩數的積是-1，其中一個數是一又三分之二，則另一個數是？

另一個數是（-1）÷（一又三分之二）=負5分之3