1) That'd be very helpful.
那很有用。
2) That is some help to us, ie It helps to a certain extent.
那对我们很有用.
3) and umbrellas are very useful there.
伞在那儿很有用。
4) Is it very useful like that?
那样会很有用吗？
5) That would be very interesting.
那很有趣。
6) That would be very helpful?.
那很有帮助。
补充资料：那样
1.代词。指示程度﹑方式﹑性状等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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