Question

8 Why don't you give Helen this cheap perfume instead of the expensive one! She won't have known / won't know the difference! 9 I just want to remind everyone that we'll be holding /we hold a Latin-American evening at the town hall this Friday.

Answer 1

Won’t know

We will hold

Answer 2

Both sentences have two possible options for the verb tense, and the choice depends on the context and the intended meaning:

8. "Why don't you give Helen this cheap perfume instead of the expensive one! She won't have known / won't know the difference!"

   • "She won't have known the difference" suggests that at some point in the future, Helen will not have known (past perfect tense) the difference between the two perfumes. This implies that Helen will not realize the difference in the future because she has not known it in the past.

   • "She won't know the difference" suggests that Helen will not be aware of the difference between the perfumes in the future (simple future tense). This implies that she won't be able to distinguish between the two perfumes when she receives the cheap one.

   Depending on whether you want to emphasize her lack of awareness in the future based on her past knowledge or just her future lack of awareness, you can choose either option.

9. "I just want to remind everyone that we'll be holding / we hold a Latin-American evening at the town hall this Friday."

   • "We'll be holding" is in the future continuous tense, indicating that the event will take place in the future, specifically on Friday.

   • "We hold" is in the simple present tense, suggesting that the town hall regularly hosts Latin-American evenings, and this Friday is no exception.

   The choice between these two options depends on whether the Latin-American evening is a one-time event or a recurring one. If it's a one-time event happening only this Friday, "we'll be holding" is the appropriate choice. If it's a regular occurrence, "we hold" is more suitable.