prevent做動(dòng)詞有預(yù)防;防止，阻止;擋住等意思，那么你知道prevent的第三人稱單數(shù)是什么嗎?下面學(xué)習(xí)啦小編為大家?guī)?lái)prevent的第三人稱單數(shù)和用法例句，歡迎大家參考學(xué)習(xí)!

　　prevent的第三人稱單數(shù)：

　　prevents

　　prevent的用法：

　　prevent的用法1：prevent的基本意思是“止”,可表示“阻止”(某計(jì)劃或意圖)、“防止”(已有兆頭的險(xiǎn)事、惡事)、“制止”(某人做某事)等,強(qiáng)調(diào)做好預(yù)先的防備或準(zhǔn)備,含有“阻止成功”的意味。

　　prevent的用法2：prevent主要用作及物動(dòng)詞,可接名詞、代詞或動(dòng)名詞作賓語(yǔ),不接不定式作賓語(yǔ)。用作prevent賓語(yǔ)的動(dòng)名詞前常有物主代詞或者名詞,人稱代詞賓格表示其邏輯主體。prevent可用于被動(dòng)結(jié)構(gòu)。prevent偶爾也可用作不及物動(dòng)詞。

　　prevent的用法3：表示“阻止做某事”,可用prevent sb/sb's v -ing,也可用prevent sb from v -ing,這幾種用法在意義上沒(méi)有明顯的區(qū)別。

　　prevent第三人稱單數(shù)例句：

　　1. The condition prevents the blood from circulating freely.

　　這種病阻礙了血液的循環(huán)暢通。

　　2. She has a theory that drinking milk prevents colds.

　　她有一種說(shuō)法,認(rèn)為喝牛奶能防止感冒.

　　3. His disability prevents him from holding a job.

　　他的傷殘妨礙他就業(yè).

　　4. We shall come tomorrow if nothing prevents.

　　如果沒(méi)有什么阻礙的話,我們明天會(huì)來(lái).

　　5. Rheumatism prevents him form bending his back.

　　風(fēng)濕病使他不能彎腰.

　　6. The Supreme Court today struck down a law that prevents criminals from profiting from books or movies about their crimes.

　　最高法院今天廢止了一項(xiàng)關(guān)于禁止罪犯把其罪行寫(xiě)成書(shū)或拍成電影而從中牟利的法律。

　　7. The camera has a built-in failsafe device which prevents it from working if the right signals aren't received.

　　照相機(jī)有內(nèi)置自動(dòng)防故障裝置，該裝置確保相機(jī)在未接到正確信號(hào)時(shí)不會(huì)啟動(dòng)。

　　8. Scientists are still studying how the compound prevents pathogens from infecting cells.

　　科學(xué)家仍在研究這種化合物如何阻止病原菌侵染細(xì)胞.

　　9. The very fact of poverty prevents that activity from flourishing.

　　正是因?yàn)樨毨У氖聦?shí)使這些活動(dòng)無(wú)法興旺起來(lái).

　　10. My inferior understanding prevents my grasping the unquestionable soundness of the mission.

　　我理解力差,無(wú)法理解這次任務(wù)的絕對(duì)正確性.

　　11. Prevents egress of the latter through the unsealed portion.

　　阻止后者通過(guò)未接合部分出來(lái).

　　12. Charcoal prevents browning of tissues and stimulates embryogenesis and rooting.

　　炭可防止組織變棕色并刺激胚胎發(fā)生與生根.

　　13. Signal which prevents accidental operation by spurious signals or avoids possible ambiguity.

　　防止假信號(hào)的意外作用或者避免二義性而設(shè)置的信號(hào).

　　14. The crust seals the soil and prevents the evaporation of water.

　　這層表皮把土壤封閉,防止水份蒸發(fā).

　　15. The scintillation of the earth's atmosphere prevents this limit from being attained.

　　地球大氣的擾動(dòng)使這一分辨率無(wú)法達(dá)到.