被动语态什么时候一般现在时，一般过去时，现

The farmer feeds the animals. => The animals are fed by the farmer.  一般现在时

The farmer is feeding the animals. => The animals are being fed by the farmer. 现在进行时

The farmer fed the animals. => The animals were fed by the farmer. 一般过去时.

The farmer was feeding the animals. => The animals were being fed by the farmer. 过去进行时.

The farmer has fed the animals. => The animals have been fed by the farmer. 现在完成时.

The farmer had fed the animals. => The animals had been fed by the farmer. 过去完成时.

The farmer will feed the animals. => The animals well be fed by the farmer. 一般将来时.

The farmer is going to feed the animals. => The animals are going to be fed by the farmer. (be going to 的将来时)