特黄特色三级在线观看免费,看黄色片子免费,色综合久,欧美在线视频看看,高潮胡言乱语对白刺激国产,伊人网成人,中文字幕亚洲一碰就硬老熟妇

21.9 had better表示"最好"
?
   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
   It is pretty cold. You'd better put on my coat.
   She'd better not play with the dog.


   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.
 


















 學(xué)習(xí)啦--英語(yǔ)語(yǔ)法大全