初一英语题，需要讲解

where are your fathers?
Is this woman a teacher?
Helen and Jack,welcome to our school.
How old are you?你多大了？
How is your sister?你姐姐怎么样？

where is your father?(改为复数）
Where are your fathers?
Be动词和一般的名词都只要将单数改为复数就可以了

Are those women teachers?(改为单数）
Is that woman a teacher?
注意：that的复数形式是those, woman是women。
还有该复数为单数的时候别管了在单数前面加上a/an。

to,school,and,Helen,our,Jack,welcome(连词成句）
Welcome Helen and Jack to our school!
记住：Welcome sb. to somewhere.欢迎某人来到某地！

I'm fifteen(对画线提问)
How old are you?你几岁了？
My sister is fine (就划线部分提问）
How is your sister?你的姐姐怎么样了？

希望这个对你有用！

1.Where are your fathers?
（is是单数的Be动词，复数就要改为are，father就要加s,因为这个句子是要改成复数，所以句子的所有单数都要改成复数，your意思是：你的；你们的 ，所以不用担心会不一样）
2.Is this woman teacher?
（同上面一样，把句子的所有复数改成单数，are改成is，those改成this，women是“女人”的复数形式，要改为单数的woman，teachers改为teacher）
3.Welcome to our school,Helenand Jack.
（Welcome sb. to