單從“確?！钡囊馑紒?lái)講，建議使用ensure,make sure.如因語(yǔ)境不同需要有不同的表達(dá)，此處給出一些相關(guān)的詞性解釋，希望對(duì)你有所幫助。 ensure確定，確保：

1.The book ensured his success.那本書確定了他的地位

2.These pills could ensure you a good night's sleep.這些藥丸可 以確保你睡一宿好覺(jué)。

3.ensure product quality 確保產(chǎn)品質(zhì)量 guarantee保證，擔(dān)保,承諾對(duì)某事負(fù)法律責(zé)任： 1.I can guarantee it's true. 我保證那是真的。 2.guarantee to pay debts. 保證還債。 assure 明確或有信心的告訴某人，保證某事： 1.I assure you he will be safe with us. 我保證他和我們?cè)谝黄?會(huì)完全的。 2.assure ***/oneself of sth. 使某人自己對(duì)某物確信不疑。 She was able to assure herself that nothing had been taken from her purse.她確信錢包里什么東西都沒(méi)有被拿去。 certify強(qiáng)調(diào)書面證明某事物。 warrant證明某物正當(dāng)有理，保證某物為真品正品: This material is warranted to be pure silk.這種料子保證是純絲的。