1. It is high time that we put an end to the (trend). （该是我们停止这一趋势的时候了）
2. There is no doubt that enough concern must be paid to the problem of…（毫无疑问，对……问题应予以足够重视）
3. Obviously ,if we want to do something … it is essential that…（显然，如果我们想要做么事，很重要的是……）
4. Only in this way can we …（只有这样，我们才能……）
5. Spare no effort to + V（不遗余力的）