1. Scotland has a high proportion of police officers.
There is a high proportion of police officers in Scotland.​
2. New Zealanders don't like talking about personal matters.
New Zealanders aren’t interested in talking about personal matters​
3. No city in the USA is as crowded as New York.
New York is the  most crowded city in the USA​
4. They don't allow tourists to cross the river at night.
The tourists mustn't allow crossing the river at night ​
5. Not many people can explore the White House.
Only a  few people  can explore the White House

1. There is a high proportion of police officers in Scotland. 
        Cấu trúc: S+ have+ a/ an/ the+ O
2. New Zealanders aren't interesting in talking about personal matters. 
        Don't like= be (chia thì theo câu gốc) not interesting in
3. New York is the most crowded in the USA. 
       ​Cấu trúc so sánh hơn nhất
            Dịch nghĩa: Không thành phố nào đông bằng New York ở Mỹ
          => New York là thành phố lớn nhất ở Mỹ
4. The tourists mustn't cross the river at night. 
      Don't allow (không cho phép= musn't (không được/ bị cấm)
5. Only a few people can explore the White House
      Not many= a few many+ danh từ số nhiều a few: ít (mang tính khẳng định) + dt đếm được số nhiều
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