情態(tài)動(dòng)詞hadbetter

1、學(xué)習(xí)必備歡迎下載情態(tài)動(dòng)詞 had better,should,ought to 用法 點(diǎn)擊一、情態(tài)動(dòng)詞 had better1. had better表示“最好”，其縮寫為“' better ”，表示“有義務(wù)做某事”。例如：He warned me that I had better not say any th ing about it.他警告我對(duì)此事 最好只字不提。The matter had better be left as it is.這事最好任其自然。平輩。例如:2. had better表示提岀建議、勸告或命令 等，含有“應(yīng)該做某事”之意，一般適 用于對(duì)晚輩、I thou

2、ght you had better have my opinion first.我想你最好先聽聽我的意 見(jiàn)。It' very cold outside. You' better p ut on more clothes.外面很冷，你做好 多穿些衣服。3. had better 否定形式為 had better not, 疑問(wèn)句中had better的否定形式有兩 種：Had n't +主語(yǔ) +better + 動(dòng)詞原形；Had +主語(yǔ)+ better not +動(dòng)詞原形。 例如：Hadn't you better go with them?你跟他們?nèi)ゲ皇歉脝?/p>

3、？better not go?我們不去Had we不是更好嗎？do sth.有時(shí)可省略為例如：4. Had betterbetter do sth.Better stay at home and have a goodrest.最好呆在家中好好休息。二、情態(tài)動(dòng)詞 should, ought to1. Should作情態(tài)動(dòng)詞，表示勸告、建議， 多指主觀上有責(zé)任、有義務(wù)做某事，作應(yīng)該”解，語(yǔ)氣比ought to要弱。 例如：You should kee p your pro mise 你應(yīng) 該履行諾言。You should study first aid with the teacher.你應(yīng)該跟

4、老師學(xué)習(xí)急救法。2. Ought to表示客觀上有責(zé)任、有義務(wù) 做某事或非?？赡艿氖拢Z(yǔ)氣較強(qiáng)。其 否定形式為 ought not to。例如：You ought to drink plenty of water.你應(yīng)該大量喝水。You ought not to put any oil on the skin if it is burned.如果皮膚燒傷，你不 應(yīng)該往上搽油。3.Should , ought to用于疑問(wèn)句時(shí)， should直接放在主語(yǔ)前，而 ought變 疑問(wèn)句時(shí)則把ought放在主語(yǔ)前，to 放在主語(yǔ)后的動(dòng)詞前。例如：Should I open the window?我應(yīng)

5、該打開窗戶嗎？Ought he to go?他 應(yīng)該去嗎？Y es, I th ink he ought to.是的， 我想他應(yīng)該。4. Should與ought to還可以表示推測(cè), 表示說(shuō)話者根據(jù)某種情況做出的肯定 推測(cè)，其意義為“應(yīng)該”。例如：The wind has stopped blowing; it should be warmer.風(fēng)停了，天氣該暖和 了。If she took the 9:30 a.m. train, she ought to be arrivi ng now.假如她搭上早9:30的火車，現(xiàn)在應(yīng)該快到了。5. Should還可以用 于動(dòng)詞 suggest, in sist, order, dema nd 等賓語(yǔ)從句的虛 擬語(yǔ)氣中。例如：I suggest that he apply for the job.我建議他申請(qǐng)這份工作。She insisted that Tom should not take part in the meeti ng. 她堅(jiān)持要求湯 姆不應(yīng)該來(lái)參加會(huì)議。6. “ should / ought to + have + 過(guò)去分詞” 則表示本應(yīng)該做某事而實(shí)際上未做，含 有“責(zé)備”的意味。例如：You should have