在“can't”中使用的撇号表示“cannot”中省略了“no”。

An ___apostrophe is used in "can't" to show that "no" has been left out of "cannot".

请记得在“我朋友的车”中加上表示所有格的撇号。

Please remember to add the possessive ___apostrophe in "my friend's car".

老师讲解了英语标点中撇号的不同用法。

The teacher explained the different uses of the ___apostrophe in English punctuation.