Unit4 Our Memory Section B(2a-2c) 教学设计-2026-2027学年人教版英语九年级上册

Unit 4 Our Memory 

Section B 2a-2c 

I. Teaching Aims

1. Students can use affixes (re-, -ive, -ion, -ful, -able, -ness, -ly, un-) to form new words from act, forget and effect, and check them with a dictionary.

2. Students can choose the correct forms of address, likely, react, position, case and effective to complete the sentences in 2b.

3. Students can use go through, run out, happen to and keep in mind to complete the passage about animal memories in 2c, and talk about which animal impressed them most.

II. Key and Difficult Points

Key points: The new words and phrases above, and how a prefix or suffix changes a word in meaning and in part of speech (e.g. act -> react / action / active / actor; forget -> forgetful / unforgettable; effect -> effective / effectively).

Difficult points: Telling react from address and using the right word form in 2b; choosing the correct phrase in 2c, especially run out of, what goes through their minds and what happens to.

III. Teaching Tools

Textbook (Unit 4, Section B, 2a-2c), blackboard and colored pens, word cards, a handout for 2b and 2c, a dictionary, and a computer with PPT (optional).

IV. Teaching Procedures

Step 1: Lead-in (3 mins)

1. Write happy / happiness / unhappy on the blackboard and ask: What do -ness and un- do to a word?

2. Elicit that an affix (a prefix or a suffix) helps us make new words, and lead in today's task.

[Purpose] To activate students' background knowledge about affixes and get them ready for the word-building task.

Step 2: Word Building - 2a (8 mins)

1. Ask students to work in pairs and use affixes to make as many new words as possible from act, forget and effect; encourage them to use a dictionary.

2. Collect answers on the blackboard: re- (react, action, active, actor); forget (forgetful, forgettable, forgetfulness, unforgettable); effect (effective, effectively, effectiveness).

[Purpose] To help students build vocabulary through affixes and understand how a word's part of speech changes.

Step 3: Word Use - 2b (10 mins)

1. Ask students to read the six sentences and choose the correct form of the words from the word cloud (address, likely, react, position, case, effective).

2. Check answers in pairs: 1) reacted  2) case  3) effective  4) likely  5) position  6) address.

[Purpose] To practice the new words in context and train students to use the right word form.

Step 4: Reading & Phrases - 2c (12 mins)