Here are some examples:
* Base Form: walk
* Present Participle: walking
* Base Form: sing
* Present Participle: singing
* Base Form: eat
* Present Participle: eating
However, there are some exceptions to this rule:
* Verbs ending in -e: Drop the -e and add -ing.
* Base Form: write
* Present Participle: writing
* Verbs ending in -ie: Change the -ie to -y and add -ing.
* Base Form: lie
* Present Participle: lying
* Verbs ending in a consonant followed by a single vowel and then a consonant: Double the consonant and add -ing.
* Base Form: run
* Present Participle: running
The present participle can be used in various ways:
* As part of a continuous verb tense: "He is walking."
* As an adjective: "The running water."
* As a noun: "The walking dead."
Remember that the present participle can be formed in different ways, depending on the specific verb. It's always a good idea to check a dictionary if you're unsure about the correct form.