computers are the technology (which is) most likely to chang

去掉which is便是computers的定语.即变成了定语从句.
computers主语 are谓语 the techonology宾语 后面的便是定语,作为词来用.
如果加了which is 那么“most likely to change the way we live in the future ”便是which is的宾语.
用法上都可以