1. Nothing But - NOUN (ばかり)

 

Similar to だけ (only) but carries a meaning closer to "nothing but" because it describes a generic, large amount. Such as "nothing but girls in this class" = クラスに女ばかりがいる

 

2. Just Finished - VERB た form (ばかり)

 

3. Do Nothing But (habitual) - VERB て form ばかり

 

4. Do Nothing But / All You Do Is - VERB dictionary form ばかり

 

5. All we need to do is - VERB dictionary form ばかり

 

6. Not only, but also - VERB casual / Noun / Adj ばかりではなく・ばかりか