and连接两个谓语动词时态一致问题

A established cooperation with B to overcome technical difficulties and have obtained great achievements. 语法是否正确

A established cooperation with B to overcome technical difficulties and have obtained great achievements.

本句，and 连接两个并列谓语动词，时态应一致，其他可以。改为：

1. A established cooperation with B to overcome technical difficulties and obtained great achievements.

2. A have established cooperation with B to overcome technical difficulties and have obtained great achievements.

刘永科 - 教育出版集团英语总顾问 & 英语系列图书主编

擅长：语法理论,语言学,文化背景 | 采纳率 86% | 回答于 1秒前

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