改变句式,(意思不变)

因为我没有工夫去作研究与试验，所以没成为养花专家。

I haven't become a flower expert for I have no time for research and experiment

我之所以还没成为养花专家，是由于没有工夫去做研究与实验之故．

因为没有工夫去作研究与试验，我还没成为养花专家。

I have yet to become an expert in growing flower, because I have no time to do research and experiments.