`1`.In the future , robots will be able to do all our housework

`\rightarrow` Thì TLĐ ( ĐT Tobe ) : S + will be + adj / n

`\rightarrow` Đặc điểm nhận dạng : In the future

`2`.I couldn't speak until I was three years old

`\rightarrow` ĐT đi sau couldn't vẫn giữ nguyên

`\rightarrow` Thì QKĐ ( ĐT Tobe ) : S + was / were + adj / n

`3`.Will robots be able to talk to us in 2030 ?

`\rightarrow` Thì TLĐ ( ĐT Tobe ) : Will + S + be + adj / n ?

`\rightarrow` in 2030 `=` Tương lai

`4`.If the water is polluted , fish will die

`5`.If you walk to school , you will help reduce the air pollution

`\rightarrow` CĐK Loại 1 ( `4 , 5` ) :

`-` If - clause : Thì HTĐ : S + Vs / es / không s , es

`-` Main - clause : Thì TLĐ : S + will + V

`\text{@ TheFox}`

$\text{1.In the future , robot will be able to do all our homework .}$$\\$$\text{2.I couldn't speak until I was three years old.}$$\\$$\text{3.Will robots be able to talk to us in 2030.}$$\\$$\text{4.If the water is polluted, fish will die}$$\\$$\text{5.If you walk to school , you will have reduce the air pollution.}$$\\$$\text{Kiến thức : S be able to V : có khả năng làm gì ;If 1 : If S + tobe/V hiện tại , S will +V}$$\\$$\text{#Camđilánhnạn;-;}$