3. The girls said that their school was very big
=> Chuyển our -> their, is -> was (lùi thì)
4. Jim said that pizza is his favorite/favourite food
=> Chuyển My -> his, is -> was (lùi thì)
Công thức câu tường thuật :
=> S + said/told/etc. + (that) + S + V(lùi thì)

            -Vinny, #Muoi, Chúc bạn học tốt, Sayorana~

$3,$ The girls said (that) their school was very big.

* We `->` their (thay đổi ta ngữ)

Is `->` was (lùi thì)

$4,$ Jim said Pizza was his favorite food.

* My `->` his (thay đổi ta ngữ)

Is `->` was (lùi thì)

`=>` Cấu trúc câu tường thuật:

S + said/ told/... + (that) + S + V(lùi thì)