现在完成时复习教案 公开课

The Present Perfect Tense

(Glass begins: Stand up. Good morning, boys and girls. Good morning, Miss Liu. Sit down, please. Thank you. )

T: First, let me introduce myself. My name is .... You can call me Miss Liu. I come from .... Middle School. I am glad to be here and study with you. Would you like to listen to me?

Ss: …

T: Thank you.

Oh, the floor is dirty. Who would like to clean the floor?

You, please. Thank you.

(1 student cleans the floor.)

T: What’s she doing now? Who can tell me? Hands up.

S: She is cleaning the floor.

T: (to the student) Thank you.

T: What did she do just now?

S: She cleaned the floor just now. (Write on the Bb)

T: How is the floor now? (Is it dirty?)

S: It’s clean. (Write “The floor is clean now” on the Bb)

T: Well, she cleaned the floor just now. So, the floor is clean now. What do the two sentences mean? Use one sentence to express the same meaning, please.

S: She has cleaned the floor. (Write on the Bb).

T: Change “she” into “he”, please.

S:

T: I/ we / they…

S:

T: Very good! Look: What tense do we use?

S: The Present Perfect Tense.

T: Yes, good. Today we’ll go over The Present Perfect Tense. It’s form is :

S: have/ has + V- p.p. (Write on the Bb)

T: Do you know how to change the verbs into past participle?

S: (Summarize the rules)

T: Great. (Show the P.P. of the regular verbs) Look,

Rule 1: + ed. Rule 2: + d. Rule 3: double the last letter + ed. Rule 4: change “y”into “i”, + ed.

But some verbs are special. For example: (Show the P.P. of the irregular verbs)

Put--- put --- put

It’s past tense and past participle are both “put”.

How about “r ead”: this line, one by one.

“b uy”:

Next, answer together, please.

Well done. Thank you. Here are so many irregular verbs, they are very important. Try your best to remember them.

T: (Point to the Bb, write 1) Now please look at the Bb. This is the first usage of the tense. We often use some key words in the sentence. Some examples: already, just, never…. Anymore? Do you know? Who can tell us?

S: already, yet, ever, never, just, before, once/twice/three times… etc.

T: Excellent. (Show the expressions)

Read together, please. “already”, one, two, go.

Good, thank you.

Look at the sentences, who would like to read them, please?

I have visited France.

ever

I have just visited France.

never

T: Look, where is “just”?

S: It’s before the P.P.

T: Great! How about “ever/never”?

S: …

Good, next, we often use “already” like this:

I have already visited France. (Where is already?)

S: …

T: But sometimes we use “already” like this:

I have visited France already.

Where is it?

S: …

T: Now do you know how to use already?

S: “already” can be used before the P.P., or at the end of the sentence.

T: Great. Then look at the next ones:

before.

I have visited France once.

twice.

three times.

T: Where is “before”?

S: …

T: Where are once/twice/three times?

S: They are at the end of the sentence.

T: Very good. How about yet? Do you know? Look at the sentence:

I have already visited France.

Change the sentence into a negative sentence, please.

S: I have n’t visited France yet.

T: Yes. Look, “already” is changed into “yet”. Where is “yet”?

S: …