'my english has been improved' or 'my english has improved',which is correct?

问题描述:

'my english has been improved' or 'my english has improved',which is correct?

前者,一般来说,improve是及物动词,后面必须接宾语,而当出现在被动句中时,后面可不加任何宾语,因为句子中的主语已充当其宾语.但不在被动句中,一般后面接其“提高”的对象!