`25.` Linda said that she didn't know where her brother was working then

`-` Câu gián tiếp dạng câu kể:
S + said + (that) +  S +  V(lùi thì)

`-` lùi thì: HTĐ `->` QKĐ

`-` HTTD `->` QKTD

`-` now `-` then

`26.` Long isn't strong enough to lift the crate of oranges

`-` S +  tobe + (not)  +  adj + enough +  to_V + O

`->` (không) đủ để làm gì

`27.` Max doesn't play volleyball as well as Josh

`-` So sánh ngang bằng:
S + tobe/V + as + adj/adv + as + S

`25` Linda said that she didn't know where her mother was then.

`-` Câu tường thuật dạng câu kể:

`->` S + said + (that) + S + V(lùi thì)

`-` I `->` she

`-` Hiện tại đơn `->` quá khứ đơn

`-` my `->` her

`-` now `->` then

`26` Long isn't strong enough to lift the crate of oranges.

`-` S + be + (not) + adj + enough + to V: (không) đủ ... để ...

`27` Max doesn't play volleyball as well as Josh.

`-` So sánh bằng phủ định với trạng từ:

`->` S1 + (not) + V + as + adv + as + S2