Unit 20 :
JUST, ALREADY, and YET
現在完成式及過去簡單式2

Elementary

Summary

Present Perfect Tense& Simple Past Tense 2

Grammar Practice

They have just arrived.

until now

can use in “present perfect tense” and ”simple past tense” (only “negative” and “question”)

Negative

A:Are Oscar and Thomas here?

B:No, they haven’t arrived yet./ No, they didn’t arrive yet.

ALREADY

before you expected/ before I expected

can use in “present perfect tense” and ”simple past tense”

A:What time are Oscar and Thomas coming?

B : They’ve already arrived./ They already arrived.

It’s only 9:00 and Emily has already gone to bed./ Emily already went to bed.

A:Ryan, this is Jess.

B:Yes, I know. We’ve already met./ We already met.

YET

You can only use “Simple past tense” when mention about time

1. I lost my key yesterday. (not “I have lost”)

2. We bought a new car last week. (not “we have bought”)

3.A:Does Ian know that you’re going away?

    B:No, I haven’t told him yet./ No, I didn’t tell him yet.

4.Serena has bought a new dress, but she hasn’t worn it yet./ … she didn’t wear it yet.

Question

1.A:Have Oscar and Thomas arrived yet?/ Did Oscar and Thomas arrive yet?

    B:No, not yet. We’re still waiting for them

2. A:Has Ross started her new job yet?/ Did Ross start her new job yet.

    B:No, she’s starting next week.

3. A:This is my new dress.

    B:Oh, it’s nice. Have you worn it yet?/ Did you wear it yet?