can:表示“可能,会”,多用于否定和疑问句
must:表推测时must语气很肯定,指“一定,必定”,只用于肯定句中.“must + 动词原形”表示对现在情况的推测.
因为 这个句子是肯定句
You must study hard if you want to get good grades in Englis
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相关问题
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you ____ study hard if you want to get good grades in englis
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You _______ study hard if you want to get good grades in Eng
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If you don't study hard,rather than you'll get good grades.
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Study hard,and you can get good (grade) in the exams.
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if you work hard,you will s---- in getting good grades.填什么?
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____you study, ____grade you will get. A．Hard, good B．The ha
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1.If you study hard,you will get good marks.
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C___ your exam paper carefully if you want to get good grade
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If you want to be____,you must work hard,then you may___ in
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( )good grades,you should study hard.A Getting B Get C For g