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    ±íʾ¿Ï¶¨ºÍ²»¿Ï¶¨£¨Expressing certainty and uncertainty£©[ÎÄÕ°æÈ¨ ½ûÖ¹×ªÔØ:¿¼ÊÔÓëÆÀ¼Û http://www.trgroup.com.cn/te/ uA=@1]tND)\p"\tFroG]

    1. I'm sure£¬ I'm sure (that)...[ÎÄÕ°æÈ¨ ½ûÖ¹×ªÔØ:¿¼ÊÔÓëÆÀ¼Û http://www.trgroup.com.cn/te/ 7C9B?}@.IFYrM€ti1FroG]

    2. I'm not sure. I'm not sure whether/if...[ÎÄÕ°æÈ¨ ½ûÖ¹×ªÔØ:¿¼ÊÔÓëÆÀ¼Û http://www.trgroup.com.cn/te/ q31w€FgZ\zwX1,AyFroG]

    3. Maybe. /Perhaps.[ÎÄÕ°æÈ¨ ½ûÖ¹×ªÔØ:¿¼ÊÔÓëÆÀ¼Û http://www.trgroup.com.cn/te/ EVqXAkS~5 nmyP FroG]

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