Cấu trúc twice as much as: gấp đôi, twice as many as, three times as, so sánh bội số, bài tập có đáp án

Cấu trúc twice as much as (gấp đôi) và twice as many as dùng để so sánh bội số: He earns twice as much as I do. Cách dùng three times as ... as, half as ... as, twice + so sánh hơn, ba cách viết lại, lỗi thường gặp và bài tập có đáp án.

Cấu trúc twice as much as là gì?

Cấu trúc twice as much as là cách so sánh bội số, nghĩa là 'gấp đôi', dùng với danh từ không đếm được; với danh từ đếm được dùng twice as many as. Ngoài ra còn có three times as ... as (gấp ba) và half as ... as (bằng một nửa).

Ví dụ

He earns twice as much as I do.
This room has three times as many chairs as that one.
She runs twice as fast as her sister.

Twice dùng cho gấp 2; từ gấp 3 dùng three times, four times, ...

Bảng bội số

Bội số	Cách nói	Ví dụ
gấp đôi	twice as ... as	twice as old as
gấp ba	three times as ... as	three times as big as
bằng một nửa	half as ... as	half as much as
gấp rưỡi	one and a half times as ... as	one and a half times as long as

Các cách viết lại

Cấu trúc	Ví dụ
twice as + adj + as	The new house is twice as big as the old one.
twice the + N + of	The new house is twice the size of the old one.
N + times + so sánh hơn + than	The new house is two times bigger than the old one.

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