$11$. have been

$→$ for nine years: HTHT

$-$ S + have/has + Ved/ cột3

$12$. have invented

$→$ HTHT:

$-$ S + have/has + Ved/ cột3

$13$. was

$→$ got married when she... : Dấu hiệu của QKĐ

$-$ S + Ved/ cột2

$14$. have known

$→$ since: TTNB của Thì HTHT

$-$ S + have/has + Ved/ cột3

$15$. I don't watch

$→$ HTĐ:

$-$ S + V nguyên/s,es: o,x,h,z,s

$16$. are watching

$→$ are watching (v): đang xem

$-$ S + Tobe + Ving

$17$. weren't

$→$ Vì not/be nên ta sử dụng Tobe để làm câu phủ định

$18$. has haven

$→$ S + have/has + Ved/ cột3

$19$. have never ride

$-$ have never ride (v): chưa bao giờ đi xe

$20$. went

$→$ yesterday TTNH QKĐ:

$-$ S + Ved/ cột2

$@Bão$