1. My mother has made the doll.

2. The doll has been made by my mother.

3. The doll is made by my mother.

4. The doll was made by my mother.

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Is #2 the passive sentence of #1? What about #3? Can #3 be the passive of #1?

2 answers

#4 is the passive of #1, #2 or #3 are not.
To write Haz's answer correctly:

#4 is the passive of #1.
#2 and #3 are not.