Please, correct my sentence

Reported Speech 也可以有 past continuous tense 的。

例如：

Direct Speech：Tony said,'I am doing homework.'
Reported Speech：Tony said he was doing homework.

但如果 direct speech 裏已有 past continuoss tense, reported speech 要寫 past perfect continuous tense.

Direct Speech：Tony said,'I was doing homework yesterday'.
Reported Speech：Tony said he had been doing homework yesterday.



至於 「he said that he found a piece of reflective paper WHICH/THAT had been stuck on the wall, while he was cleaning the floor.」

這句話，前半句的確是 reported speech。
但後半句卻不屬於 reported speech 的子句 (clause)，因此它跟 reported speech 無關。

這句的 direct speech 是：
He said,'I find a piece of reflective paper which has been stucked on the wall.' while he was cleaning the floor.

總之，direct speech 有的時態，reported speech 都會有。



題外話：

在你的例句中，逗號之前是子句 1，之後是子句 2。子句 1 才是 reported speech，也是 main clause (主要子句)；子句 2 只是 subordinate clause，不能獨立出現。兩句子句連接就是 complete sentence，是 complex sentence 的一種。


有咩唔明再問啦。