guarantee sth for：The fridge is guaranteed for 3 years.（這台冰櫃保修三年。）
guarantee to do sth：He guaranteed to participate in the discussion.（他保證參與此次討論。）
guarantee sb sth：I can't guarantee you this job.（我不能保證你能有這份工作。）
guarantee that從句：He guaranteed he would come here.（他保證他會來這兒。）
give sb a guarantee that從句：He gave me a guarantee that he would perform well.（他向我保證會好好表現。）
under guarantee：My watch is still under guarantee, so they will repair it for free.（我的手錶仍在保修期內,所以他們會免費維修。）
be guaranteed to do sth：People can't be guaranteed to do the right thing.（人們不能保證一定做正確的事情。）
guarantee to do sth：We guarantee to fulfil our mission.（我們保證完成任務。）
guarantee that從句：We guarantee that you will find a community with which to socialise.（我們保證你們會找到自己的交際圈。）