1. A cell phone is a useful device.

2. The cell phone is a useful device.
3. Cell phones are useful devices.
------------------------------
Are they all in generic use? Is #2 in generic use here?

All are fine.

Thank you. Are they all in generic use?

Yes.

shanya

In order to determine if a statement is in generic use, we need to understand the concept of generic and specific reference.

1. "A cell phone is a useful device." - This statement is in generic use because it uses the indefinite article 'a' before "cell phone." It refers to cell phones in general, without referring to any specific cell phone.

2. "The cell phone is a useful device." - This statement is likely not in generic use because it uses the definite article 'the' before "cell phone." It suggests that the speaker is referring to a specific cell phone that is known or has been previously mentioned. However, without further context, it is difficult to determine definitively if it is being used generically or specifically.

3. "Cell phones are useful devices." - This statement is in generic use because it uses the plural form of "cell phone" without an article. It refers to cell phones in general, without specifying any particular cell phone.

In summary, statements 1 and 3 are in generic use, whereas statement 2 may or may not be in generic use depending on the context in which it is used.