Subject of a sentence
The word or collection of words that we speak about in a sentence is called the subject. The subject is the 'doer' of the action.
Note: (i) No sentence can be made without a subject. In the case of the imperative sentence, the subject remains implied.
Example: Open the doors.
(ii) The subject of a sentence usually comes before the predicate. But sometimes the predicate comes before the subject.
Examples: Here comes the bus.
Sweet are the uses of adversity.
(iii) The subject consists of a single word or a group of words.
Rajib takes exercises every day. (Rajib - single word)
The color of his eyes is blue, (group of words)
Forms of the subject.
Noun: Sum! Sings a song.
Noun equivalent: She is drawing a picture.
Gerund: Walking is a good exercise.
Infinitive: To tell a lie is a sin.
Clause: That he is honest is known to all.
Phrase: How to solve the problem is difficult.