Someone had forged her signature on the cheque.

有人在支票上伪造了她的签名。

《牛津词典》

They forged their manager's signature on the cheque.

他们在支票上伪造了经理的签名。

youdao

Johnson forged entries on cheque book stubs to make it look as though he had been paying suppliers to the care home, the court was told.

BBC: South West Wales