Kata "for" dan "since" digunakan untuk menyatakan lama waktu (duration), terutama dalam Perfect Tense seperti Present Perfect dan Past Perfect. Berikut penjelasannya:
🔹 FOR
Digunakan untuk menyatakan periode waktu atau durasi, misalnya: 2 jam, 3 hari, 10 tahun, dll.
Struktur umum (Present Perfect):
Subject + have/has + V3 + for + durasi waktu
Contoh:
-
I have lived here for 5 years.
(Saya telah tinggal di sini selama 5 tahun.) -
She had studied English for two hours before dinner.
(Dia telah belajar bahasa Inggris selama dua jam sebelum makan malam.)
🔹 SINCE
Digunakan untuk menyatakan titik awal waktu, misalnya: sejak tahun 2000, sejak kemarin, sejak pukul 5, dll.
Struktur umum (Present Perfect):
Subject + have/has + V3 + since + titik awal waktu
Contoh:
-
They have worked here since 2010.
(Mereka telah bekerja di sini sejak 2010.) -
He had waited since 8 o’clock.
(Dia telah menunggu sejak pukul 8.)
TENSES yang Umum Digunakan dengan "for" dan "since":
Tense | Contoh dengan "for" | Contoh dengan "since" |
---|---|---|
Present Perfect | I have known her for 10 years. | I have known her since 2015. |
Past Perfect | She had worked for 3 hours. | She had worked since morning. |
Present Perfect Continuous | We have been waiting for an hour. | We have been waiting since noon. |
Latihan Soal – Pilih "for" atau "since":
-
I have lived in this city ___ 2012.
-
She has worked at the hospital ___ ten years.
-
They had been friends ___ they were in high school.
-
He has waited ___ over an hour.
-
We haven’t seen them ___ last week.
-
My parents have been married ___ 25 years.
-
I had stayed in that house ___ my childhood.
-
We have known each other ___ we met at the university.
Kunci Jawaban:
-
since → (titik waktu: 2012)
-
for → (durasi: 10 tahun)
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since → (titik waktu: saat SMA)
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for → (durasi: lebih dari satu jam)
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since → (titik waktu: minggu lalu)
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for → (durasi: 25 tahun)
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since → (titik waktu: masa kecil)
-
since → (titik waktu: saat bertemu di universitas)
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