Si vous le voulez, nous pouvons aller au restaurant ce soir.
Comme vous pouvez le voir, il ne fait pas bon aujourd'hui.
In these sentences, should le be used or not? Or is it optional? In English we normally wouldn't include it:
"If you want, we can ..." rather than "If you want it, we can ..."
"As you can see, ..." rather than "As you can see it, ..."
The use of the pronun "le" as direct object in these sentences is just a question of register.
You use it when you want a formal language.
The same sentences without this pronun are correct, there are informal and colloquial languages.
This is not mandatory but improve the comprehension. "Le" is refering to the second part of sentence which is the purpose of the sentence.
