The picture comes from XXX.

1, the picture was taken by XXX: Photo by? Photographed by someone.

2. The picture is provided by XXX: The picture is provided by someone.

Such sentences are usually expressed in the passive voice.

English passive voice usually consists of "be+done". But "get+done" can also form the passive voice. This kind of sentence focuses on the result of the action rather than the action itself.

For example, Chinese is spoken by many people. Chinese is the successor of the verb speak. It is often said in Chinese, for example, I was beaten by him, which is passive. However, sometimes due to the need of sentence structure, the passive voice is also used. For example, it is not surprising that the wages of workers in this area exceed one month. It is used as a formal subject in a sentence. The infinitive that has to be paid for more than one month is the logical subject of the sentence. It is common for workers in that place to get paid after more than a month.

Extended data

Grammatical point:

Passive: subject +v .[PP .]+by+ object.

General present tense: subject +is/are+v.[pp.] (+by+guest)

Simple past tense: subject +was/were+v.[pp.] (+ by+guest)

Present perfect tense: subject+have/has+bee+v. [pp.] (+by+guest)

Passivity of modal verbs: subject+emotion +be+v.[pp.] (+ by+guest)

Modal verb): Yes, you should, you must.

Baidu Encyclopedia-English Passive Voice