should用法歸納與練習(xí)had better.doc

should用法歸納一、Should 表示義務(wù)、責(zé)任、常譯為“應(yīng)當(dāng)”，“應(yīng)該”，或表示一種估計(jì)的情況，譯成“按理應(yīng)當(dāng)”，“估計(jì).”。Why should I pay him? 為什么我該付給他錢?They should be there by now， I think. 我估計(jì)，他們現(xiàn)在到那兒了。二、用于成語(yǔ)中 I should like to.“我想(做).”I should like to ask the teacher a question. 我想問老師一個(gè)問題。三、shouldnt ：不應(yīng)該（表示責(zé)備）；應(yīng)該不，應(yīng)該沒有（表示推測(cè)）。如： You shouldnt be so lazy.你不應(yīng)該這么懶惰。 There shouldnt be any problem with your listening.你的聽力應(yīng)該沒有 問題了。用should 或shouldnt 填空。1. All of us _study hard and learn English well.2. As a student, you_ eat in class.3. You _speak to your parents like this ,you must be polite (有禮貌)4. You _eat less and take more exercise if want ot be healthier and stronger.5. My mother is very tired after work, I_ do some housework for her.had better(常簡(jiǎn)略為d better)是一固定詞組，had better最好，用于表示對(duì)別人的勸告、建議或表示一種愿望。其用法有以下幾點(diǎn)：一、had better后面必須跟動(dòng)詞原形。had better后跟動(dòng)詞原形(即不帶to的不定式)，構(gòu)成had better do sth.句型。這里的had不能用have來(lái)替換。如：Youd better go to hospital at once.你最好立即去醫(yī)院看病。Tom, youd better go there today.湯姆，你最好今天去那兒。二、主語(yǔ)不論是第幾人稱，句子不論是什么時(shí)態(tài)，都要用had better的形式。如：Now you(he，we) had better listen to the teacher.你(他，我們)現(xiàn)在最好聽老師講。三、had better的否定式。如：常用的否定形式是將否定副詞not直接放在had better的后面。如：You had better not miss the last bus.你最好不要錯(cuò)過末班公共汽車。You had better not leave for Nanjing the day after tomorrow.你最好后天不要?jiǎng)由砣ツ暇?。注意：否定副詞not絕不能放在had的后面。如：不能說：You hadnt better go.而應(yīng)該說：You had better not go.四、在祈使句中，had有時(shí)可以省略。如：Better not do it .最好別做那事。Better not wait for them.最好不要等他們。 五、had better在表示對(duì)別人勸告、建議時(shí)，不宜用于與陌生人、長(zhǎng)輩及上級(jí)的交談中。對(duì)長(zhǎng)輩說話時(shí)，最好不用had better。比較有禮貌的說法是：It might be better for you.；It would be better for you.。如：It might be better for you to help me，Grandpa.爺爺，您最好能幫我一下。練習(xí)下列各句都有一處錯(cuò)誤，請(qǐng)改正。1.Youd better to wait for me