These plants will produce food and oxygen that we need.Scientists should be able to develop plants that grow on Mars.这两句什么从句?能不能帮忙分析各种句型?我分析各种从句能力太差了.

These plants will produce food and oxygen that we need.Scientists should be able to develop plants that grow on Mars.这两句什么从句?能不能帮忙分析各种句型?我分析各种从句能力太差了.
These plants will produce food and oxygen that we need.
Scientists should be able to develop plants that grow on Mars.
这两句什么从句?能不能帮忙分析各种句型?我分析各种从句能力太差了.

These plants will produce food and oxygen that we need.Scientists should be able to develop plants that grow on Mars.这两句什么从句?能不能帮忙分析各种句型?我分析各种从句能力太差了.
定语从句
that引导的句子修饰前面的名词 food and oxygen ； plants

宾语从句

that引导的名词从句　先行词分别是food and oxygen和planes　都是宾语部分

什么是宾语从句?一个从句充当主句中的宾语成分, 叫宾语从句。
两个句子的从句都不是跟在动词后面，所以不是做宾语，也就没有宾语从句之说。
俩定语从句。that we need限定food and oxygen。
grow on Mars限定 plants。

4楼说得对，是定语从句