高二英語(yǔ)Sporting events教案
you should have started earlier.
8. should 和ought to 都為"應(yīng)該"的意思，可用于各種人稱。
---ought he to go? ---yes. i think he ought to.
9. 表示要求，命令時(shí)，語(yǔ)氣由 should（應(yīng)該）、had better最好）、must（必須）漸強(qiáng)。
七.need和dare
1.need表示 “需要或 必須”。作情態(tài)動(dòng)詞時(shí)，僅用于否定句或疑問(wèn)句中。在肯定句中一般用must，have to，ought to，或should代替。例如：
you needn’t come so early.
--need i finish the work today? --yes，you must / no, you needn't..
注意needn’t+不定式的完成式，表示本來(lái)不必做某事而實(shí)際上做了某事。
you needn’t have waited for me.
2.dare作情態(tài)動(dòng)詞時(shí)，主要用于疑同句、否定句和條件從句中，一般不用在肯定句中。how dare you say i’m unfair.
he daren’t speak english before such a crowd, dare he?
3.dare和need常作實(shí)義動(dòng)詞。有時(shí)態(tài)、人稱和數(shù)的變化.所不同的是作實(shí)義動(dòng)詞時(shí)，在肯定句中，dare后面常接帶to的不定式。在否定和疑問(wèn)同中，dare后面可接帶to或不帶to的不定式。i dare to swim across this river. he does not dare(to)answer. don’t you dare(to)touch it! i wondered he dare(to)say that. he needs to finish it this evening.
4. need 的被動(dòng)含義：need, want, require, worth（形容詞）后面接doing也可以表示被動(dòng)：need doing = need to be done
八. had better表示"最好"
1 . had better 相當(dāng)于一個(gè)助動(dòng)詞，它只有一種形式，它后面要跟動(dòng)詞原形。
had better do sth ； had better not do sth 如：
it is pretty cold. you'd better put on my coat. she'd better not play with the dog.
2. had better have done sth表示與事實(shí)相反的結(jié)果，意為"本來(lái)最好"。
you had better have come earlier.
九 would rather表示"寧愿"
would rather do； would rather not do
would rather… than… 寧愿……而不愿。
還有would sooner, had rather, had sooner都表示"寧愿"、"寧可"的意思。
if i have a choice, i had sooner not continue my studies at this school.
i would rather stay here than go home. = i would stay here rather than go home.
---- shall we go skating or stay at home? ----which ___ do?
a. do you rather b. would you rather c. will you rather d. should you rather
十.情態(tài)動(dòng)詞的回答方式
問(wèn)句 肯定回答 否定回答
need you…? yes, i must. no,i needn't
must you…? /don't have to.
1）---could i borrow your dictionary? ---yes, of course, you____.
a. might b. will c. can d. should
答案c. could表示委婉的語(yǔ)氣，并不為時(shí)態(tài)。答語(yǔ)中of course，表示肯定的語(yǔ)氣，允許某人做某事時(shí)，用can和 may來(lái)表達(dá)，不能用could或might。2）---shall i tell john about it? ---no, you ___. i've told him already.