whichever是有一定范围的限制的
而whatever是泛义
在这里,句子的意思是无论你选什么课程,你都要保证有足够的时间去提升它
这里是泛指课程而不是任选单科
“whatever”作代词或形容词.
1.“whatever”作代词,/nomatterwhat/“无论什么”、“无论如何”.
例如:
①Keepcalm,whateverhappens
②Whatever(Nomatterwhat)youmaysay,Iwillgo.
2.“whatever”作代词,/anythingoreverythingthat/“任何的事物”、“每一……的事物”.
例如①Dowhateveryoulike.
②WhateverIhaveisatyourservice.
3.作代词“orwhatever”“或任何东西”、“诸如此类”
例如:He"dhavedifficultyinlearninganylanguageGreek,Chinese,orwhatever.
4.作代词,“到底(究竟)什么”.
例如Whatevercanhemeanbythat?
5.作形容词,“任何的”、“无论什么的”、“任何种类、程度等的”.
例如Takewhatevermeasuresyouconsiderbest.
6.作形容词,在否定句中,置于名词之后,强调否定语气
例如①Therecanbenodoubtwhateveraboutit.
②Ihavenointentionwhateverofresigning.
“Whichever”作代词或形容词
1.“Whichever”作代词,/anythingoreverything“无论哪些”、“无论哪个”.
例如①Whichever(Anythingthat)youwantisyours.
②Taketwoofthefourelectivesubjects,whicheveryouprefer.
2.作代词,“……的那一个”.
例如①Takewhicheveryoulikebest.
②Whicheverofyoucomesinfirstwillreceiveaprize.
3.作代词,“究竟哪个(哪些)”.
例如Whicheverdoyoumean?
4.作形容词,“无论哪个”、“无论哪些”.
例如:Hemaychoosewhicheverdeskhewishes.
