`38.` I suggest that you (should) make posters on energy saving

`-` S + suggest(chia) + that + S+ ( should) + V-inf + O: ai đó gợi ý rằng ai đó nên ...

`39.`  The fishermen said that they were keen on setting out to sea again

`-` Cấu trúc câu tường thuật dạng kể:

 S + say(s)/said+ (that) + S + V-lùi thì

`HTĐ -> QKĐ`

`40.` That computer has been used for 3 months

`-` Bị động HTHT:

S+ has/have +been+  V3/v-ed + (by O)

`37.` I wish I had more time for my hobby

`-` Câu ước hiện tại:

S + wish(es) + S + V2/ed + O

`38.` I suggest that you should make posters on energy saving

`-` Why don't + S + V_inf + O?

`=` S + suggest + that + S + (should) + V_inf + O

`->` Đề nghị, gợi ý ai làm gì

`39.` The fisherman said that they were keen on setting out to sea again

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

`-` lùi thì: HTĐ `->` QKĐ

`40.` The computer has been used for three months

`@` S + began/started + V_ing + N + time + ago

`=` S + has/have + V3/ed + N + for + time

`=` N + has/have + been + V3/ed + (by + O) + for + time