英语改错题Billy was afraid of his aunt would punish him if he lied.句中有一处错误。帮忙改正

of---> that

Billy was afraid that his aunt would punish him if he lied

be afraid of doing sth./be afraid of sb. (to do sth.)
be afraid that+从句
由此可知be afraid of后只能接名词性质的词，而不能加句子，要加句子应用第二个词组。本题后是一个完整的句子，因此要将of改为that。

of后面加上that。
of是介词，后面不能加句子……would是动词，所以是不符合语法的……