`1``.` I asked Keith what he had done on Saturday

→I asked Keith, "What did he do on Saturday"

→S + asked (+O)/wanted to know/wondered + Wh + S + V.

`2``.` He told me that he had seen an action film.

→"He saw an action film", he told me.

→S + said/ told+ (that) + S + V

`3``.`Keith prefers action films to dramas. 

→Keith likes action films more than he likes dramas.

`4``.` The film was so good that they couldn't stop talking about it

→ It was such a good film that they couldn't stop talking about it.

→S + be + so + adj + that + S ​+ V

`=`S + V + such + (a/an) + adj + noun + that + S + V

`5``.` Keith's parents let him stay out until midnight.

→ Keith was allowed to stay out until midnight.

→To be allowed to do sth: dược cho phép làm gì

Answers:

Quy tắc lùi thì từ câu tường thuật -> câu tường thuật dạng kể:

- Thì quá khứ đơn -> Thì hiện tại đơn

- Thì quá khứ hoàn thành -> quá khứ đơn

1. I asked Keith what he had done on Saturday
=> I asked Keith, "What did you do on Saturday"

2. He told me that he had seen an action film.
=>"I saw an action film", he told me
3. Keith prefers action films to dramas.
=> Keith likes action films than he likes dramas

$\rightarrow$ prefer N to N: thích cái gì hơn cái gì

$\rightarrow$ S + like(s) N than S + likes(s) N: thích cái gì hơn thích cái gì
4. The film was so good that they couldn't stop talking about it
=> It was such a good film that they couldn't stop talking about it

$\rightarrow$ S + tobe so adj that + S + V(thường): cái gì...đến nỗi

$\rightarrow$ It + tobe such a/an adj N that S + V(thường): đúng là..khiến
5. Keith's parents let him stay out until midnight.
=> Keith was allowed to stay out until midnight.
$\rightarrow$ let sb + V_inf: để ai làm gì

$\rightarrow$ sb + tobe allowed to V_inf: ai được phép làm gì

`\color{yellow}{Tuancute}`