IV. Underline a mistake in each sentence and correct it 23. We are at home yesterday afternoon. __________________________ 24. We can do table – tennis on Sunday. __________________________ 25. My sister tells us “not play football on the street”. __________________________ 26. My brother will goes skiing tomorrow. __________________________ 27. They might visits Sydney in the future. __________________________

23. $\text{are $\Rightarrow$ were}$

Yesterday $\rightarrow$ $\text{DHNB thì quá khứ đơn}$

24. $\text{do $\Rightarrow$ play}$

Play đi với $\text{1}$ môn thể thao dùng $\text{bóng}$

25. $\text{not $\Rightarrow$ don't}$

Câu mệnh lệnh : $\text{Don't + V-inf +...}$

26. $\text{goes $\Rightarrow$ go}$

Tomorrow $\rightarrow$ $\text{DHNB thì tương lai đơn}$

$\rightarrow$ Tương lai đơn : $\text{S + will + V-inf + V +...}$

27. $\text{visits $\Rightarrow$ visit}$

They là $\text{chủ ngữ số nhiều}$ nên động từ không chia .