高一英語 Unit3 Celebration導(dǎo)學(xué)案
can this be true? ______________________
how can you be so careless! ___________________
this cannot be done by him. __________________
4)在變否定句時,直接在后加上“not”,可縮寫成_________或___________, 但不能寫成cann’t。例如:
(變成否定句) he can swim. → _______________________
3 ought意思是______________后面跟帶有 to 的動詞不定式否定式為_________________。(c級)
you ought to read these books if you want to know how to repair the motorcar.
____________________________________________
you ought to bring the child here.
_____________________________________________
you ought not to walk alone at night. _____________________________________________
注意: ought to和should的區(qū)別:
1.ought to語氣略強。 2.should較常用。
3.ought to在美國英語中用的很少,而should卻相當(dāng)常用。
4.ought to屬正式用語。
練一練:(c級)
1the man in the office____________be mr. black because he went home
just now.
a. mustn’t b. may not c. can’t d. needn’t
2---can you go surfing with us this afternoon?
----i’d like to , but i ________ look after my sister at home , because my mother is ill.
a. need b. must c. have to d. should
3----can i take this book out of the reading room?
------______. please read it here.
a. certainly b.no, you needn’t
c.no, you mustn’t d.no, you may not
4 ----_____ you help me answer the telephone
----ok.
a. can b. should c. need d. must
5 tom is young but he ____ fly a kite by himself.
a. can b. may c. need d. must
6 -----could i cross the street here?
-----of course you _____.
a.could b.can c.are able to d.will
7-----_______ we attend the party?
-----no, you needn’t. you are free.
a. must b. can c.may d. shall