only then后面加什么

only then 为否定词 置句首时必须倒装；

要用正常语序，就不要放句首。

only then promise of reduced maintenance costs with SOA can be realized.

唯有这样，才能实现降低SOA维护成本的承诺。

only then promise of reduced maintenance costs with SOA could be realized.

只有这样，才能够实现降低SOA维护成本的承诺。

only then can the data be processed-and an averaged-out quintuple generated.

在此之后，才能处理数据，产生一个平均值的五变量组。