>This is photosynthesis.Maybe "Trees perform photosynthesis" or something like that would be better. > CO2 is bad air.Be careful! The phrase "bad air" means 「悪い空気」, but you want to mean 「大気にとって悪い」, don't you?> Here is forest. > He is scientist.Both "forest" and "scientist" are countable nouns. So you need "a".
This is photosynthesis.
CO2 is bad air.
She is saving the earth.
Here is forest.
He is scientist.
>This is photosynthesis.
返信削除Maybe "Trees perform photosynthesis" or something like that would be better.
> CO2 is bad air.
Be careful! The phrase "bad air" means 「悪い空気」, but you want to mean 「大気にとって悪い」, don't you?
> Here is forest.
> He is scientist.
Both "forest" and "scientist" are countable nouns. So you need "a".