UNIT 17

Present Perfect

現在完成式

UNIT 17

Present Perfect

現在完成式

UNIT 17

Present Perfect

現在完成式

UNIT 17

Present Perfect

現在完成式

UNIT 17

Present Perfect

現在完成式Already and Yet

Statements

I have (not) been writing (since 2004). (for years).WeThey

UNIT 17

Present Perfect

現在完成式Already and Yet

Statements

He has (not) been writing (since 2004). (for years).SheIt

UNIT 17

Present Perfect

現在完成式Already and Yet

Yes / No Questions

Have you been writing (since 2004)? (for years)?

Has he been writing (since 2004)? (for years)?

UNIT 17

Present Perfect

現在完成式Already and Yet

Short Answers

Affirmative

Yes, I have. we

he has.

UNIT 17

Present Perfect

現在完成式Already and Yet

Short Answers

Negative

No, I haven’t. we

he hasn’t.

UNIT 17

Present Perfect

現在完成式Already and Yet

Wh-Questions

How long have you been writing?

How long has he been writing?

UNIT 17

Present Perfect

現在完成式

UNIT 17

Present Perfect

現在完成式Already and Yet

They have been living here for 5 millions years.

I’ve been reading this book since Monday.

Dr. Owen has been writing articles since 1990.She’s been working in Niger for a year.

UNIT 17

Present Perfect

現在完成式

UNIT 17

Present Perfect

現在完成式Already and Yet

They have lived here for 5 millions years.

I’ve read two books about elephants.

Dr. Owen has written many articles.

She’s worked in many countries.

UNIT 17

Present Perfect

現在完成式

UNIT 17

Present Perfect

現在完成式Already and Yet

They have been living here for 5 millions years.

They have lived here for 5 millions year

UNIT 17

Present Perfect

現在完成式Already and Yet

I’ve been reading this book since Monday.

I’ve read two books about elephants.

UNIT 17

Present Perfect

現在完成式Already and Yet

Dr. Owen has been writing articles since 1990.

Dr. Owen has written many articles .

UNIT 17

Present Perfect

現在完成式Already and Yet

She’s been working in Niger for a year.

She’s worked in many countries.