Teaching phrasal verbs to grade 11 students can be done effectively by following these steps:

1. Introduce the concept: Begin by explaining what phrasal verbs are - combinations of a verb and one or more particles (prepositions or adverbs) that together have a different meaning than the individual words. Provide examples to help students understand the concept.

2. Present common phrasal verbs: Start with a list of commonly used phrasal verbs that are relevant to the students’ daily lives. For example, “turn off,” “look up,” “give up,” etc. Write them on the board and explain their meanings.

3. Provide context: Give students sentences or short paragraphs where the phrasal verbs are used in context. This will help them understand how the phrasal verbs are used in real-life situations. Encourage students to guess the meaning of the phrasal verbs based on the context.

4. Break down the meaning: Explain the individual meanings of the verb and the particle in each phrasal verb. For example, in the phrasal verb “turn off,” “turn” means to change the position or direction, and “off” means to stop or deactivate something. Help students understand how the combination of these two words creates a new meaning.

5. Practice activities: Engage students in various activities to practice using phrasal verbs. These can include fill-in-the-blank exercises, matching exercises, role-plays, or creating their own sentences using the phrasal verbs. Encourage students to use the phrasal verbs in their speaking and writing.

6. Provide visual aids: Use visual aids such as flashcards or posters to help students remember the phrasal verbs. Include the verb, particle, and a simple illustration to represent the meaning. Display these visual aids in the classroom for students to refer to.

7. Review and reinforce: Regularly review the phrasal verbs taught in previous lessons to reinforce learning. Include them in quizzes, tests, or homework assignments. Encourage students to use phrasal verbs in their everyday conversations and written work.

8. Encourage self-study: Provide additional resources such as online exercises, worksheets, or phrasal verb dictionaries for students to practice independently. Encourage them to explore and discover new phrasal verbs on their own.

Remember to make the lessons interactive and engaging to keep the students interested and motivated to learn.