Final answer:
In English, 'do' is an auxiliary verb used for emphasis, forming questions, or making negatives. 'Non-manual marker expression' refers to accompanying body language or facial expressions in sign language, or tone in spoken language. The verb 'run' becomes 'running' by adding 'ing'.
Step-by-step explanation:
The sign 'do' in English often serves as an auxiliary verb used for emphasis, to form questions, or to make negatives. The non-manual marker expression commonly refers to the facial expressions or body language that accompany sign language, but in spoken English, it could be the emphasis or tone used with the word 'do' for different meanings. To change 'run' to 'running', which is the present participle form of the verb, you simply add 'ing' to the end of the base verb 'run'.