if you have learned it well ,you ______ do these exercisesif you have learned it well,you ____ do these exercises.A.don't need B.needn't to C.don't have D.don't have to

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if you have learned it well ,you ______ do these exercisesif you have learned it well,you ____ do these exercises.A.don't need B.needn't to C.don't have D.don't have to

if you have learned it well ,you ______ do these exercisesif you have learned it well,you ____ do these exercises.A.don't need B.needn't to C.don't have D.don't have to
if you have learned it well ,you ______ do these exercises
if you have learned it well,you ____ do these exercises.
A.don't need B.needn't to C.don't have D.don't have to

if you have learned it well ,you ______ do these exercisesif you have learned it well,you ____ do these exercises.A.don't need B.needn't to C.don't have D.don't have to
选D
首先NEED可以做实义动词,有动词词组need to do ,其否定形式为don't neeed to do译为：需要做什么；
need 也可作助动词（诸如will,can.),所以又可加动词原形,即need do,也是“需要做什么”的意思
第一项：need作实义动词,所以该改为don't need to,
第二项：need 作助动词,故应改为needn't
第三,四项区别have do（叫某人做什么）和have to do（不得不做什么）的意思
若选D,则该句意为：如果你已经把它学好了,那么你就没有必要再做这些练习了.
加油咯!

D

D needn't do sth 或 don't need to do sth
这里只有don't have to 符合题意。

D

D. don't have to
此句的意思是如果你已经学的不错，就不必做练习了
A错在don't need to do，to没有
B. needn't to 错在 . needn't do, . needn't 是情态动词
C. don't have to do和A一样的道理
祝你进步，有不会的可以再问我哦
我很乐意为您解答疑惑O(∩...

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D. don't have to
此句的意思是如果你已经学的不错，就不必做练习了
A错在don't need to do，to没有
B. needn't to 错在 . needn't do, . needn't 是情态动词
C. don't have to do和A一样的道理
祝你进步，有不会的可以再问我哦
我很乐意为您解答疑惑O(∩_∩)O~

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if you have learned english,you will find it is a b-----to so much knowledg if you have learned it well ,you ______ do these exercisesif you have learned it well,you ____ do these exercises.A.don't need B.needn't to C.don't have D.don't have to From this unit,you have also learned: I have learned a ( ) from you. 帮我看到首字母填空 a开头的一个英文字母Have you ever been to a foreign country?What have you learned by visiting it?If you have never been a_____ 翻译:konwledge of history is not required for most jobs but if history is one of your good subjects you will have learned to remember facts and details. -Have you _____ learned English?-Yes,I’ve _ ___ learned a lot. How much have you learned so far?什么意思? Write down what you have learned about our shcool write down what you have learned about friends and friendship What have you learned from this unit?write them down! How many English sayings have you learned in the text? What have you learned about yourself翻译过来是什么意思? The question is ( ) can be put into practice.A.how you have learned B.how what you have learned C.that why you have learned D.how that you have learned为什么? have you learned english before 12 years old? what have you learned from beethoven?的答语是什么? What kinds of things have you learned from your hobby? what have you learned in your english course