lt rained so heavily that we couldn't have a piclt rained so heavily that we couldn't have a picnic.(同义句转换)lt rained heavily for us have a picnic.

问题描述:

lt rained so heavily that we couldn't have a pic
lt rained so heavily that we couldn't have a picnic.(同义句转换)lt rained heavily for us have a picnic.

It rained too heavily to have a picnic for us.