句型转换。+t1m-T9`.K'W;n/q7z9Y4H8s8P'|*[
Are they watching TV?（作否定回答）+t1m-T9`.K'W;n/q7z9Y4H8s8P'|*[
4v*U'f-j,they+z'O'T,R.+t1m-T9`.K'W;n/q7z9Y4H8s8P'|*[