Present n' Past Participle

We can use -ing and -ed forms:

1. Combined with other words to make participle clauses.
Because I was thinking what was wrong with him, I crashed my car.
Thinking what was wrong whit him, I crashed my car.

2. Aferter nouns to make reduced relative clauses

Ask the girl who is talking on the microphone.
Ask the girl talking on the microphone.
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3. After conjunctions and prepositions

After eating dinner, I like to take a nap.

When visiting a place, I like to take a camara  with me.
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4. Participles generally come before the noun they modify. They may also be linked to the subject of the sentence by a linking verb such as to be or to feel.
The park is a frightening place at night.

Steve felt frightened as he walked alone in the park at night.
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5. As an adjective, a present participle modifies a noun that affects someone or something else.
The new song was interesting.

The book that I bought is so boring.
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6. As an adjective, a past participle modifies a noun that is affected by someone or something else.
The fans are interested in the new song.

The fans were interested in the new song.