只有。。。才能（以下的例句都以 只有努力工作才能收获丰富 为例） Only by...can...(倒装句）：Only by working hard can we harvest a lot. Only if ...can...(倒装句): Only if we work hard can we harvest a lot. 倒装句重点在 前。 only if/only by:We can harvest only if we work hard/only by working hard. but:We cannot harvest a lot but to work hard. 还有好多好多种说法。
karastt823
