certainly的同义词有哪些？

     certainly的意思是肯定，当然，无疑，确定。

     certainly的同义词有：sure、without doubt、of course、that's to be sure 。这些词都是表肯定，当然的意思。

     certainly的反义词是uncertainly，意思是犹豫不决地，没把握地。

     造句：

     1、Several countries certainly hope so.

        几个国家当然希望如此。

     2、I certainly never expected to become a writer.

        我当然没想到会成为一名作家。

     3、It is certainly true that there are .

        确实如此。

     4、This car is certainly not mine.

        这辆车确实不是我的。

     5、The climate in Russia is interesting but certainly cold.

        俄罗斯的天气有趣但是当然很冷.