there is a curtain in front of the window这句话有错误的地方么?

there is a curtain in front of the window这句话有错误的地方么? 动词过去式后用be动词如何变形?比如说我应该说the curtain I picked was a blackish curtain 还是 the curtain I picked is a blackish curtain?还有如果我用has的话是 the curtain I picked has a black tone 还是 the curtian I pic 关于There be句型的就近原则：There is a new mirror and some curtains in my bedroom.There is a curtain in my bedroom. 3.There are blue curtain.改 4.There are a desk,a table and a shelf in it.改：5.There is a air_conditioner on the wall.改 根据字母提示,把句子所缺的单词补充完整.1.There are four r( ) in my house.They are a living r( ),a b( ),a k( ) and a b( ).2.I can u( ) a computer at home.3.I like y( ) curtain.4.There is a big m( ) on the wall,in the bathroom.5.There 窗帘这个单词curtain用There be句型表述是用there is 还是there are 用适当冠词填空1.Mr.Chen is ______principal of our school.2.I want ______apple .Please give me ______ one on the table.3.______ sun is too bringht.Would you please close the curtain?（窗帘）4.Is there a lot of ______food to eat?5.She likes my study 英语作文This is my study.There is a desk in it.On the desk,there are a lot of books,a walkman and a clock.Behind the desk,there is a window.On the window,there is a beautiful curtain.In front of the desk,there is a chair.Look at the wall 英语作文 my studyThis is my study.There is a desk in it.On the desk,there are a lot of books,a walkman and a clock.Behind the desk,there is a window.On the window,there is a beautiful curtain.In front of the desk,there is a chair.Look at the wall 英语翻译There is a snake behind the wardrobe.There are two mice on the ciock.There is a rabbit behind the curtain.There are two sheep in the bed.There is a duck under the tabre.There is a chair in front of the wardrobe. curtain curtain Curtain there's no curtain for each one The weather of these days is really bad.It’s foggy and there is haze in the air.So,we can’t see the things very far.Every morning,when I pull back the curtain,I only can see the building dozens miles away.When I go to school,I must be very carefu The cat is behind the curtain是什么意思 Come on!Where there is a will,there is a way!I believe you 中文是什么? 英语翻译And now,the end is near So i face the final curtain My friends,i will say it clear I will state my case of wich i am certain I have lived a life that is full I have travelled each and every highway And more,much more than this I did my wa