.a. had hardly/scarcely (or: just ) done… when-clause 一 … 就… / 刚 … 就 … Hardly/Scarcely had…done…when-clause b. had no sooner done…than-clause 一 … 就… / 刚 … 就 … No sooner had…done…than-clause c. as soon as-clause… 一 … 就… / 刚 … 就 … d. the moment-clause… 一 … 就… / 刚 … 就 … the minute-clause… 一 … 就… / 刚 … 就 … immediately /directely/instantly… 一 … 就… / 刚 … 就 … a. The plane had hardly landed when the people ran towards it. (=Hardly had the plane landed when…) She had just got off the train when she heard her name called. b. We had no sooner reached the top of the mountain than we all sat down to rest. (=No sooner had we reached the top of the…) c. As soon as the plane landed, the people ran towards it. Write to me as soon as you arrive in Beijing. d. The moment she got off the train, she heard someone in the crowd call her name. c.f. The animal hardly makes any movement when it is in its hibernating state. 本文来源：https://www.wddqw.com/doc/91b896fa87254b35eefdc8d376eeaeaad1f316b3.html