grammar problems

Question 0

は

Answer 0

Topic particle marks what the sentence is about

Ex: ぼくはアメリカンです

Question 1

が

Answer 1

Subject particle- marks a word or phrase that is the subject

Ex: だれがアメリカンです

Question 2

を

Answer 2

Follows a direct object (someone directly affected by the verb)

Indicates a place or object from which someone leaves 八時に家を出る

Place something moves over, along or through はしをわたります

Question 3

に

Answer 3

1. Point in time- at, on, in

2. Location or existence

Question 4

へ

Answer 4

Motion in general- not used with time words or indicating location