填was heard to
意思为:邻居被听到锁门声
主动语态中,hear只能接不带to的不定式或动名词作宾语即:
hear sb do sth: I heard her sing that song. 我听见过她唱那首歌。
hear sb doing sth :I heard her singing that song. 我听见她在唱那首歌。
在被动语态中,又要将不定式前加上to,就以上面两句为例:
She was heard to sing that song. 她被人听到过唱那首歌。
She was heard singing that song。 她正在唱那首歌时被人听到了。
be heard do 是不存在的。
追问。
答案是was heard to
追答那就对了呀 这句话是属于被动句 被听到了 :)