We use an adverbial condition clause to tell that one action can be fulfilled when another action has been completed (sering dikenal dengan kalimat bersyarat). A condition clause is introduced by the subordinators if and unless.
If
In conditional clauses, we often use if (jika/kalau/bila). The use of if can be grouped into four conditions. Pay attention on the following discussion.
Present Condition (for general condition)
IF + S + V1, S + V1
Example
If I eat too much, I get fat. (This always happens.)
If somebody waves a red flag, it usually means danger.
Present Future Condition (for present future events/possible)
IF + S + V1, S + WILL + V1
Example
If we leave now, we’ll catch the 11.30 train.
If you take this medicine, you’ll soon feel better.
Past Future Condition (for past future events/impossible)
IF + S + V2, S + WOULD + V1
Example
If I had a million pounds, I would give it all away.
If I were you, I would receive his offer.
Note: Use were for all subjects in this type of sentences as the substitution of is/am/are/was.
Past Future Perfect Condition (for imaging a different past, but the past cannot be changed)
IF + S + HAD + V3, S + WOULD + HAVE + V3
Example
If Columbus had not discovered America, the history of the world would have been quite different.
If television had not been invented, what would we have done in the evenings?
Unless
We sue unless to replace if…not…when it introduces an exception to whatever is stated in the main clause. Unless is always followed with a positive meaning, while the main clause always has a negative meaning.
Example
Unless you take more care, you’ll have an accident.
I want you to keep working unless I tell you to stop.
Unless cannot replace if….not…. in the following conditions:
· Past Future (Perfect) Condition
Example
John would be our best player if he weren’t lazy. (unless)
If she hadn’t had an alarm clock, she would have missed the train. (unless)
· If = whether (in Indirect Questions)
Example
She promised to let me know if she wasn’t coming. (unless)
· The negative condition in someone’s mind
Example
I’ll be surprised if they don’t come to the meeting. (unless)
What shall we do if they don’t reply to our letter? (unless)
EXERCISE 1
Translate the following Indonesian sentences into English. Be careful of using if pattern in each sentence.
1. Jika jalanan tidak macet, saya akan ada disana sekitar pukul 7.
2. Dia akan mendapatkan banyak masalah kalau dia tidak mempelajarinya dengan hati-hati.
3. Kamu tidak akan sedih seperti ini kalau dulu kamu menuruti nasehat saya.
4. Rumah ini sudah terbakar habis kalau petugas pemadam tidak segera tiba.
5. Andai aku seekor burung merpati, aku akan terbang mengelilingi dunia.
Thi thử ielts online bạn đã thử? Nếu chưa hãy đến ngay với testuru bạn sẽ cảm nhận được sự khác biệt ngay lần đầu.
https://www.pearltrees.com/testuru
https://fancy.com/testuru