在英语中，表示部分赞同的几个表达方式如下：

1. "agree up to a point" - 在一定程度上达成一致意见。

例句：Although I agree with him up to a point, I find it hard to believe that this is true in every case.

2. "broadly agree" - 大部分都同意。

例句：The conference delegates broadly agreed with the proposals.

3. "I agree in principle, but..." - 我原则上同意，但是。

4. "I agree with you on that!" - 在这一点上，我同意你的意见。

5. "You are right!" - 你说得对!

6. "I would tend to agree with you!" - 我倾向于支持你的意见，但是。

选择合适的表达方式可以根据具体语境和你想要传达的意思来决定