if you have learned it well ,you ______ do these exercises
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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 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!
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!
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