not only but also后面加什么时态

　　Children's television not only entertains but also teaches.

　　儿童电视节目不仅有娱乐性而且还有教育意义。

　　In production, we demand not only quantity but also quality.

　　我们的产品不但要求数量多，而且要求质量高。

　　One should not only observe but also help.

　　不但要看，而且要帮。

　　Things here are not only inexpensive but also of good quality.

　　这儿的东西又便宜又好。

　　Not only Jim but also his wife saw her.

　　不但吉姆而且他妻子也见到了她。