1. He no more runs fast.

2. He can no more fast.
3. He is no more a baby.
4. He runs fast no more.
-------------------------
What about the word order of 'no more'?
#1,2,and 3 seem to be correct. What about #4? Can we put 'no more' at the end of a sentence?

1 is not good, but 4 is fine.

2 is incomplete and doesn't make sense.

3 will be OK if you move "no more" to the end of the sentence.

1. He no more runs fast.

2. He can no more run fast.
3. He is no more a baby.
4. He runs fast no more.

Corrected:

1. He runs fast no more.
2. He can run fast no more.
3. He is a baby no more.
4. He runs fast no more.

Better:

1. He doesn't run fast anymore.
2. He can't run fast anymore.
3. He isn't a baby anymore.
4. (same as 1)

The word order of "no more" can vary depending on the sentence structure. In general, "no more" can be placed either before or after the verb, depending on the emphasis or style you want to convey.

Let's look at each example you provided:

1. "He no more runs fast." - This sentence is grammatically correct. "No more" is placed before the verb "runs" to indicate that he used to run fast in the past, but now he doesn't.

2. "He can no more fast." - This sentence is not grammatically correct. The placement of "no more" after the verb "fast" doesn't make logical sense. It would be better to say, "He can no longer fast."

3. "He is no more a baby." - This sentence is also grammatically correct. "No more" is placed before the adjective "a baby" to indicate that he used to be a baby in the past, but now he isn't.

4. "He runs fast no more." - This sentence is grammatically correct, but it has a slightly different emphasis. By placing "no more" at the end of the sentence, you give extra emphasis to the fact that he used to run fast, but he doesn't anymore.

So, in summary, "no more" can be placed either before or after the verb in a sentence, depending on the intended meaning and emphasis.