Unit 2 Section A Grammar Focus教案 2025-2026学年外研版（2024）英语八年级上册

Unit 2 Getting along

Lesson 3: Grammar Focus

一. Teaching Objectives

（一）Language Ability

1.                            Master the usage of the present perfect tense with for and since to express duration (e.g., "The giant has been selfish for years," "We have been friends since childhood").
2.                            Use the present perfect tense with for and since to talk about interpersonal relationships (e.g., "I have known her for three years").
3.                            Distinguish between for (period of time) and since (specific time) in context.

（二）Cultural Awareness

1.                            Notice that English speakers use the present perfect tense with for and since to emphasize the continuity of relationships, reflecting the value of long-term connections.
2.                            Understand that describing relationship duration is a common way to express closeness in many cultures.

（三）Thinking Ability

1.                            Analyze the structure of the present perfect tense with for and since through examples, developing grammatical reasoning.
2.                            Choose between for and since based on whether the context refers to a period or a specific time.

（四）Learning Ability

1.                            Summarize grammar rules by comparing example sentences with for and since.
2.                            Use exercise strategies (e.g., filling in blanks, error correction) to consolidate understanding.

二. Teaching Key Points

1.                            Structure of the present perfect tense with for and since: have/has + past participle + for + period / since + specific time.

2.                            Differences between for (e.g., for 5 years) and since (e.g., since 2018).

三. Teaching Difficult Points

1.                            Using for and since correctly with non-action verbs (e.g., "know," "be") in the present perfect tense.
2.                            Distinguishing between "He has lived here for 10 years" (duration) and "He lived here in 2010" (specific past time).

四. Teaching Procedures

（一）Lead-in（5 minutes）

•                               Activity 1: Review The Selfish Giant by asking: How long did the giant keep the children out of his garden?

•                               Activity 2: Introduce the present perfect tense with for and since: "The giant has kept the children out for a long time. He hasn’t seen a child since spring." Explain that they show how long an action continues.

Design Intent: Link grammar to the unit theme and activate interest.

（二）Presentation（15 minutes）

•                               Activity 1: Present examples from the story and real life:
  •                                              For (period): "The garden has been frozen for months." "We have studied together for two years."
  •                                              Since (specific time): "The giant hasn’t smiled since he built the wall." "I have liked sharing since I was young."

Highlight the structure and the difference between for (duration) and since (starting point).

•                               Activity 2: Create a comparison table on the board:

Word

Usage

Examples