Chủ động của HTTD:

(+) S+is/am/are+V-ing+O

(-) S+is/am/are+not+V-ing+O

(?) Is/Am/Are (not)+S+V-ing+O

Bị động của HTTD:

(+) S+is/am/are+being+V-pp+(by O)

(-) S+is/am/are+not+being+V-pp+(by O)

(?) Is/Am/Are (not)+S+being+V-pp+(by O)

VD:

-My mother is making tea.

-> Tea is being made by my mother

-My mother is not making tea

-> Tea is not being made by my mother

-Is your mother making tea?

-> Is tea being made by your mother?

`duong`