YOU SAID:
hello. My birthday was yesterday.
INTO JAPANESE
こんにちは。私の誕生日は昨日だった。
BACK INTO ENGLISH
Hello. My birthday was yesterday.
INTO JAPANESE
こんにちは。私の誕生日は昨日だった。
BACK INTO ENGLISH
Hello. My birthday was yesterday.
That didn't even make that much sense in English.