someone
The word 'jemand' is used in German to refer to an unspecified person, similar to the English word 'someone'. It is often used in questions or statements where the identity of the person is not known or important, such as 'Ich habe jemanden getroffen' (I met someone).
Has anyone seen my glasses?
In this sentence, the word 'jemand' translates to 'anyone'. It is a commonly used term when the speaker does not specify to whom the question is directed, similar to 'has anyone' in English.
Someone has helped me.
In this sentence, 'jemand' is translated as 'someone'. A positive action is connected to an undefined person, attributing the action of helping to a person without specifying who it is.
I heard someone at the door.
In this sentence, 'jemanden' is the accusative case of 'jemand' and is translated as 'someone'. Here, it is used to specify an unspecified person which the subject has heard at the door.