French language Q&A Forum

I have read that if the subject of the secondary clause is the same, that one should not use the subjunctive, instead just use the infinitive.   But i have a sentence where i'm trying to figure out how to do that even though it feels like the subject has to be restated and would require conjugation.  I'm trying to say "Sometimes I feel like i don't know any french", and here's what i've come up with.  Would be great to get some guidance on this, perhaps there's a better way to construct the sentence.  Merci!

Parfois, je me semble que je ne sache aucun de francais.

Both mean time.  Are there rules for their use?

"Adverbs of place and certain adverbs of time usually FOLLOW the past participle: 

e.g. tard, tôt,... and some adverbs ending in -ment

Il est parti tard."

But the "correct"micro-quiz answer for the placement of "plus tard" is at the beginning or end of the sentence. Does adding "plus" modify the normal placement of "tard"?