Sessions includes the following topics:

• Common structures of expression
• Idioms & expressions
• How verb tense creates nuances in meaning
• Alternative expressions: gerunds vs. infinitives, tone & style
• Roleplay dialogs
• Mechanics: prepositions & phrasal verbs, article usage, and integrating new expressions
• Small talk and making conversation
• Reinforcement of accent modification concepts
• Communicative approaches
• What to say in bad situations
• Asking questions and speaking in meetings

http://englishbythehour.com/american-english-in-the-workplace/