* Read: When used as the past tense of the verb "read", it is spelled the same as the present tense.
* Example: "I read a book yesterday."
* Read: When used as the past participle of the verb "read", it is also spelled the same as the present tense.
* Example: "I have read that book before."
So, the past tense of "read" is simply read, and the past participle is also read.