题目内容
15．Nancy can't come here，because she ______ do her homework．（ ）| A． | has to | B． | can't | C． | doesn't have to | D． | can |
分析 南希不能过来，因为她要做家庭作业，
解答 答案：A．表达的是客观事实用一般现在时，have to表示不得不，can表示能，结合句意是说要做作业，故用have to，后加动词原形，主语she，故has，故答案是A．
点评 have to表示客观需要做的事情，意思是"必须"、"不得不"．后跟动词原形，有人称、
时态和数的变化，与情态动词 must 近义．
练习册系列答案
相关题目
1．
86．-How are yougetting on with your classmates？
-Very well．
87．The radio says it will berainy tomorrow．Remember to take your umbrella with you．
88．-Is this your pen？
-No，it isn't．I think it'shers．
89．Betty was tired last night，so she went to bedearlier than usual．．
90．-Do you know when the subway wasbuilt in Nanning？
-About three years ago．
91．In most museums，there's no shouting or running，and you aren't allowed totouch the exhibits．
92．David Smith is a student，and his mainhobbies are reading and swimming．
93．Lingling lives on the eighth floor in this building．
94．Alice is good at drawing．She wants to be a （an）artistwhen she grows up．
95．The environment in my hometown has shown a lot ofimprovment over the last few years．
| art her g et touch hobby improve build early eight rain |
-Very well．
87．The radio says it will berainy tomorrow．Remember to take your umbrella with you．
88．-Is this your pen？
-No，it isn't．I think it'shers．
89．Betty was tired last night，so she went to bedearlier than usual．．
90．-Do you know when the subway wasbuilt in Nanning？
-About three years ago．
91．In most museums，there's no shouting or running，and you aren't allowed totouch the exhibits．
92．David Smith is a student，and his mainhobbies are reading and swimming．
93．Lingling lives on the eighth floor in this building．
94．Alice is good at drawing．She wants to be a （an）artistwhen she grows up．
95．The environment in my hometown has shown a lot ofimprovment over the last few years．
2．
51．Quzhou is in thewestern part of Zhejiang．
52．The Browns are going to celebrate their daughter'stwentiethbirthday．
53．Grandma left the roomwithout finishing the rice in the bowl．
54．Helping others is the mostvaluablething in the world．
55．Don'tdrop litter everywhere．Please keep our school clean．
| west without twenty value drop |
52．The Browns are going to celebrate their daughter'stwentiethbirthday．
53．Grandma left the roomwithout finishing the rice in the bowl．
54．Helping others is the mostvaluablething in the world．
55．Don'tdrop litter everywhere．Please keep our school clean．
3．
31．Mum．It's sohot today．Can I eat some ice-cream？
32．I need an umbrella today because it'sraining heavily outside．
33．He enjoysreading in the library．
34．Mrs．Black told us aninterestingstory this morning．
35．My motheris cooking a special meal for her friends now．
| cook，read，rain，hot，interesting |
32．I need an umbrella today because it'sraining heavily outside．
33．He enjoysreading in the library．
34．Mrs．Black told us aninterestingstory this morning．
35．My motheris cooking a special meal for her friends now．
10．-Can you play the violin？
-_________．But I can play the piano．（ ）
-_________．But I can play the piano．（ ）
| A． | Yes，I can | B． | Yes，I do | C． | No，I don't | D． | No，I can't |
20．-_______？
-They are playing basketball．（ ）
-They are playing basketball．（ ）
| A． | What are they doing | B． | What do they do | ||
| C． | How are they | D． | Where are they playing |