1. 我强烈建议你去美国念书前应该先考托福。
I'd strongly recommend that you should pass the TOEFL exam before you are going to America to study.
2. 我建议你去他公司前最好先打电话。
I recommend at first you should call him before you'll go to his company.
3. 我大力推荐你也去看。
I'd strongly recommend that you can to visit it.