Em muốn hỏi 3. While he was herding his goats in the mountains, an Ethiopian discovered the coffee plant more,than 1,200 years ago.,$\rightarrow$ While,4. Before they marched into battle, ancient Ethiopian soldiers ate a mixture of raw coffee beans and,fat for extra energy.,$\rightarrow$ Before,5. After I met the film star in person, I understood why she was so popular.,$\rightarrow$ After,6. I searched through all my pockets, so I found my keys.,$\rightarrow$ Searching,7.When it was first brought to Europe, the tomato was thought to be poisonous.,$\rightarrow$ When,8. Since it was first imported into Australia many years ago, the rabbit has become a serious pest,because it has no natural enemies there.,$\rightarrow$ Since,Exercise 6: Reduce the adverb clause to a present participle clause if possible. (1 số câu k chuyến,được thì giải thích lí do),1. After the musician stopped playing, the audience stood up and clapped enthusiastically.,$\rightarrow$,2. Since David was driving to work in the rain, his car got a flat tyre.,$\rightarrow$,3. While David was driving to work, he had a flat tyre.,$\rightarrow$,4. Tom worked hard in the garden all afternoon, so he took a shower and then went to the cinema,with his friends.,$\rightarrow$,5. Before a friend tries to do something hard, an American may say "Break a leg!' to wish him or her,good luck.,$\rightarrow$,6. Lan always straightens her desk before she leaves the office at the end of the day.,$\rightarrow$,7. Before Bob left on his trip, his manager gave him a big raise.,$\rightarrow$,8. Mai got all the ingredients, so she made a delicious chicken curry for her friends.,$\rightarrow$

Question

Accepted Answer

Here are the answers with the given adverbial clause indicator changed:

3. When he was herding his goats in the mountains, an Ethiopian discovered the coffee plant more than 1,200 years ago.

4. After they had marched into battle many times, ancient Ethiopian soldiers ate a mixture of raw coffee beans and fat for extra energy.

5. Once I met the film star in person, I understood why she was so popular.

6. Having searched through all my pockets, I found my keys.

7. At the time it was first brought to Europe, the tomato was thought to be poisonous.

8. From the time it was first imported into Australia many years ago, the rabbit has become a serious pest because it has no natural enemies there.

Here are the reduced adverb clauses:

1. After the musician stopped playing, the audience stood up and clapped enthusiastically. 
   (Cannot be reduced)

2. Since David was driving to work in the rain, his car got a flat tyre. 
   (Cannot be reduced - 'since' indicates cause and effect, but 'driving to work in the rain' cannot be reduced to a present participle clause as it is a reason rather than a simultaneous action)

3. While David was driving to work, he had a flat tyre. 
   -> While driving to work, he had a flat tyre.

4. Tom worked hard in the garden all afternoon, so he took a shower and then went to the cinema with his friends. 
   (Cannot be reduced - 'so' indicates consequence, and 'working hard' is not an action simultaneous with the actions in the main clause)

5. Before a friend tries to do something hard, an American may say "Break a leg!' to wish him or her good luck. 
   -> Before trying to do something hard, an American may say "Break a leg!' to wish him or her good luck.

6. Lan always straightens her desk before she leaves the office at the end of the day. 
   -> Before leaving the office at the end of the day, Lan always straightens her desk.

7. Before Bob left on his trip, his manager gave him a big raise. 
   -> Before leaving on his trip, his manager gave Bob a big raise.

8. Mai got all the ingredients, so she made a delicious chicken curry for her friends. 
   (Cannot be reduced - 'so' indicates consequence, and 'getting the ingredients' is not an action simultaneous with 'making the curry', although they are connected)