用所给单词的适当形式填空4._______(be)your pen in your backpack?5.Excuse _______(l).ls that his key?

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用所给单词的适当形式填空4._______(be)your pen in your backpack?5.Excuse _______(l).ls that his key?
用所给单词的适当形式填空
4._______(be)your pen in your backpack?
5.Excuse _______(l).ls that his key?

用所给单词的适当形式填空4._______(be)your pen in your backpack?5.Excuse _______(l).ls that his key?
4、Is your pen in your backpack?
(be的3种形式是am,is,are,这里是指pen这个物品,而且是单数,所以用is;在句首,I大写)

5、Excuse me.ls that his key?
(I的形式有i.me,myself,这里是固定搭配excuse me)

4.Is

5.me

Is 因为your pen是单数
Excuse me 打扰了
be 包括am is are I am连用 单数用is 复数用are

4. Is

5. me


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不明白的再问哟,请及时采纳,多谢!

4、Is your pen in your backpack?
5、Excuse me.ls that his key?