帶to 的情態(tài)動(dòng)詞

帶to 的情態(tài)動(dòng)詞有四個(gè)：ought to, have to, used to, be to, 如加上have got to ,(=must), be able to，為六個(gè)。它們的疑問，否定形式應(yīng)予以注意：

　 Do they have to pay their bill before the end of the month?

　 She didn't use to play tennis before she was fourteen.

　 You ought not to have told her all about it.

　 Ought he to see a heart specialist at once.?

　 ought to 本身作為情態(tài)動(dòng)詞使用。其他的詞作為實(shí)義動(dòng)詞使用，變疑問，否定時(shí)，須有do 等助動(dòng)詞協(xié)助。

典型例題

　Tom ought not to ___ me your secret, but he meant no harm.　

　A.have told　B.tell　C.be telling　D. having told

　答案A。由于后句為過去時(shí)，告訴秘密的動(dòng)作又發(fā)生在其前因，此地應(yīng)用過去完成時(shí)，但它在情態(tài)動(dòng)詞 ought to 后，所以用have。

【帶to 的情態(tài)動(dòng)詞】相關(guān)文章：

變動(dòng)詞語釋義11-25

小學(xué)英語動(dòng)詞單詞02-09

動(dòng)詞的時(shí)態(tài)和語態(tài)專題復(fù)習(xí)02-29

高考非謂語動(dòng)詞專練12-08

英語語法口訣非謂語動(dòng)詞03-06

學(xué)說動(dòng)詞中班語言教案08-29

從句與非謂語動(dòng)詞的相互轉(zhuǎn)換07-06

春聯(lián)大全帶橫批 帶意思02-07

帶風(fēng)的詩(shī)句01-03

帶酒的詩(shī)句02-11