For vs Since (time)

1. Skiing equipment has been on sale since last summer.
2. They have played soccer for five years.
3. Has he done kitesurfing for more than a year?
4. Motorcross has interested me since I was ten.
5. She has had few injuries since she started skiing.
6. Have you done extreme sports since you were a kid?

2. He has studiedEnglishfor two years.

3. I have knownhow to ride a bikesince I was three.

4. They stopped doing extreme sports. They have not beenkitesurfingsince last July.

5. He has not goneskiingfor several winters.

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Explication

For (selama) dan since (sejak) adalah preposisi/konjungsi yang digunakan untuk menyatakan berapa lama suatu aksi/keadaan terjadi.

Contoh:

• I have been here for two days. / Saya sudah berada di sini selama dua hari.
• I have been here since Saturday. / Saya sudah berada di sini sejak hari Sabtu.

Fordiikutiperiodeataudurasi waktu, misalnya satu jam, dua minggu, sepuluh tahun.

Sincediikutititik waktu dimulainya aksi/keadaan yang dimaksud, misalnya pukul satu siang, dua minggu yang lalu, tahun 2012.

Contoh:

Andy started watching TV at 8 pm.

Now it is 10 pm and Andy is still watching TV.

That means:

1. Andy has been watching TV for two hours.
2. Andy has been watching TV sincetwo hoursago.
3. Andy has been watching TV since 8 pm.

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Pelajari lebih lanjut:

• For vs Since-yomemimo.com/tugas/50898085
• Present Perfect-yomemimo.com/tugas/37217942

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Details

Year: 8

Subject: English

Category: Structure and Written Expression

Sub-category: Present Perfect

Code: 8.5

Keywords: for, since, present perfect