很久以前用英文怎么表达？

　　很久以前你就一直想成为一名辩护律师了。

　　You've wanted to be a barrister since the year dot.

　　他一定很久以前就开始写这本书了。

　　He must have started writing his book a long time ago.

　　定量供应很久以前就结束了饼干过剩的状况。

　　Rationing had put an end to a surfeit of biscuits long ago.

　　战争并没有使他放弃自己很久以前就选择的道路。

　　The war did not deflect him from the path he had long ago taken

　　他曾向他的曾祖父许下承诺？那准是很久以前的事情了。

　　He made a promise to his great-grandfather? That would have been along time ago.