a young woman entered a cafeteria in new york city, placed her suitcase by a table where another person was eating, and went off to get some food. while she was away, a young man came by, picked up her bag , and walked off with it.
in only one out of eight trials of this experiment did the customer at the table make an effort to stop him. when the same woman again entered the cafeteria and place her bag down by a table where someone else was sitting, but then asked that person to keep an eye on it while she got some food, her tablemate stopped the young man every time he began to make away with it.
- only if you (ask) will people (help) you.

1. in only one out of eight trials of this experiment did the customer at the table make an effort to stop him. 에서 주어가 customer인가요 ?? 이 문장 도치된건가요 ?? 이 문장의 구성성분 좀 차근차근 알려주세요.

2. only if you (ask) will people (help) you.이 문제가 문단내용요약한 글을 찾는 건데... 답이 이거래요..
그런데문장구조가 좀 이상해서요.... you다음에도 동사가, 그리고 동사뒤에 will ???? 문장이 이런 문장도 있나요 ???
이 문장 설명 부탁드립니다. ㅜㅠ

이 두가지 질문 좀 정확하고! 친절한 답변 부탁드립니다. ^^