模块四 Module IV Modern life《Grammar and usage(1)： Modal verbs： general introduction》优质课教案下载

模块四 Module IV Modern life《Grammar and usage(1)： Modal verbs： general introduction》优质课教案下载

Part = 1 ﹨ ROMAN I . Basic meanings

1.

Modal verbsBasic meanings????????

2. --- Can/ Could I come in? --- Yes, you _______. ---- No, you ____________.

--- May/ Might I come in? --- Yes, you _______. --- No, you _____________

3. ---Must I finish the homework today?

---Yes, you _________. ---No, you __________________________.

may well do: ____________________

may/might as well do: ________________________.

5. can not ... too.../ can not... enough ____________________________

can’t/ couldn’t + 比较级 _______________________________

Part = 2 ﹨ ROMAN II . modal verbs+ be doing

may + be doing : _____________________ must be doing:________________________

can’t be doing: ________________________

Part = 3 ﹨ ROMAN III . modal verbs+ have done

1. When referring to possibility(表推测)

(1). The streets are all wet, so it must have rained during the night.

(2). The streets are all dry. It can’t/couldn’t have rained during the night.

(3). She didn’t come to school yesterday. Can/Could she have been ill?

(4). ---I didn’t see Mary at the meeting yesterday.

---She might/may have been ill, I guess.

(5). He doesn’t look very sad. He might/may not have been told about the result.

2. When indicating regret or blame(表遗憾或责备)

（1）Mr White should/ought to have arrived at 8:30 for the meeting, but he didn’t show up.

（2）You shouldn’t/ought not to have done that to your mother, but you did.