warm up（使）暖起来；（使）变热

wash up洗餐具；洗手洗脸

watch out for密切注意；戒备，提防

wear out穿破，用坏；（使）疲乏，（使）耗尽

What about … ？（征求意见时）怎么样？

What if … ？如果……将来会怎么？

whether … or是……还是……，不管……还是

wipe out彻底摧毁，消灭

with regard to关于，至于

with respect to关于，至于

with the exception of除……之外

Without question毫无疑问，毫无异议

work out算出；想出，制定出

would rather宁愿，宁可

would rather…than宁愿……（而不愿）