Lesson 90 Have you...yet?

The sun has set.

The sun set at 7:20.

Has the sun set?

Did the sun set at 7:20?

When did the sun set?

eat/ate/eaten

He has already eaten his lunch.

He had his lunch at one o'clock.

Have you eaten your lunch?

When did you eat your lunch?

do/did/done

They have already done their homework.

They did their homework last night.

Has she done her homework?

When did he do his homework?

Examples:

Did you read this book last week?

Yes, I read this book last week.

What about Penny?

She hasn't read this book yet.

Did you do your homework last night?

Yes, I did my homework last night.

What about Tom?

He hasn't done his homework yet.

Did Mrs. Jones go to the butcher's this morning?

Yes, she went to the butcher's this morning.

What about Mrs. Williams?

She hasn't gone to the butcher's yet.

Did you speak to him yesterday?

Yes, I spoke to him yesterday.

What about Susan?

She hasn't spoken to him yet.

Did George swim across the river an hour ago?

Yes, he swam across the river an hour ago.

What about Sam?

He hasn't swum across the river yet.