8. The twins arrived last night…………………?
9. Mary paints portraits……………………?
10. Bill put the money in the bank……………………?
11. Prices keep going up…………………?
12. I've seen you before……………………?

$\text{Form:}$

`+)` S + V/be (khẳng) + adv/O, trợ động từ/be (phủ) + S?

`+)` S + V/be (phủ) + adv/O, trợ động từ/be (khẳng) + S?

-----------------------------

`8.` didn't they

`9.` doesn't she

`10.` doesn't he

`11.` don't they

`12.` haven't I

`8`.The twins arrived last night, didn’t they?

`9`.Mary paints portraits, doesn’t she?

`10`.Bill put the money in the bank, didn’t he?

`11`.Prices keep going up, don’t they?

`12`.I’ve seen you before, haven’t I?

`-`Câu hỏi đuôi:

`*`Khẳng định `->` phủ định và ngược lại

`*`Nobody/ no one/ somebody / someone / everybody / everyone / these / those `->`they 

`*`Khi ở câu phủ định:I am`->`aren’t I

`*`this/ that/ these /‘those`->`it

`*`Let’s `->` shall we?