Mother often asks me (not eat)too much meat .It is bad for healthShe was heard (sing) the English song in her room yesterdayMy watch does not work.I will have it (repair)tomorrow

Mother often asks me (not eat)too much meat .It is bad for healthShe was heard (sing) the English song in her room yesterdayMy watch does not work.I will have it (repair)tomorrow
Mother often asks me (not eat)too much meat .It is bad for health
She was heard (sing) the English song in her room yesterday
My watch does not work.I will have it (repair)tomorrow

Mother often asks me (not eat)too much meat .It is bad for healthShe was heard (sing) the English song in her room yesterdayMy watch does not work.I will have it (repair)tomorrow
not to eat
ask sb.(not) to do sth.表示“要求/请求某人（别）做某事”.
to sing
hear sb do sth.表示“听见某人做了某事”,其被动语态是：Sb.be heard to do sth.
repaired
have sth done 表示“让某事/某物被做”,这里用过去分词表示被动.

not to eat R:ask sb not to do sth
singing hear sb doing R:听见某人干某事，只是听见她唱歌的一个片段
repaired R:have sth done秦某人干……

not to eat(ask sb not to do sth 固定用法‘叫某人不要做某事’）
to sing( hear sb do sth 固定用法，变被动语态时，动词不定式要加to）
repaired ( have sth done 固定用法‘叫某人做某事’)

not to eat ask to固定搭配
singing 只是听到 并没有听完
repaired 固定搭配 让别人（匿名）做