study的现在进行时态是studying。
例句:This reference book is very useful to our study.这本参考书对我们的研究很有用。
例句:He persisted in the study of law.他坚持学习法律。
例句:Scientists are studying the photographs of Mars for signs of life.科学家们正在研究火星的照片,寻求生命的迹象。
例句:I like to study in the library.我喜欢在图书馆学习。