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1. Tom, whose brother is my friend, said I shouldn't say anything to the police.

2. The children haven't made a long journey since 2017.

1.Tom said I shouldn't say anything to the police. Tom's brother is my friend.

→ Tom, whose brother is my friend, said I shouldn't say anything to the police.

Đây là câu mệnh đề quan hệ ( trùng tính từ sở hữu nên dùng whose )

2.The children last made a long journey in 2017.

→ The children haven't made a long journey since 2017.

Đây là câu chuyển từ QKĐ sang HTHT

CT:  $S + (last) + V_(qk)..........+t/g + ago$

→ $S + have/has + not + PIII/ed .......+since/for + t/g $

Last : lần cuối

Since : từ khi