Indicate whether the following sentence is grammatically correct.
I have lerning English for twenty years.
No, the sentence is not grammatically correct. The correct verb form of the verb for third person singular is "learning", not "lerning". So, the grammatically correct sentence is: "I have been learning English for twenty years."
Complete the following task based on the instruction and optional input provided.### Instruction:
Indicate whether the following sentence is grammatically correct.

### Input:
I have lerning English for twenty years.

### Output:
No, the sentence is not grammatically correct. The correct verb form of the verb for third person singular is "learning", not "lerning". So, the grammatically correct sentence is: "I have been learning English for twenty years."