After understanding their basic knowledge, let's look at their specific differences. ( )?
1 has different meanings.
Call sb up usually refers to contacting someone by phone, but call sb has a wider scope, which can be contacted by phone, or directly called or summoned someone.
Example:
I'll call him tomorrow. I will call him tomorrow.
I will call him at the meeting. I will call him at the meeting.
2. Different usage scenarios
Call sb up is mainly used in telephone communication scenarios, while call sb can be used in various communication scenarios, including face-to-face communication.
Example:
She called me to discuss the project. She called me to discuss the project.
She called me to help her. She asked me to help her.
3. Different forms
Call sb up is a phrasal verb, in which up is an adverb, which emphasizes the completion of the action; On the other hand, Call sb is a simple verb phrase without adverbs.
Example:
He called me to say goodbye. He called me to say goodbye.
He called me to say goodbye. He told me to say goodbye.