翻译（共4小题；每小题2．5分，满分10分）
根据所给汉语提示，完成下列句子，
76．His mother in the river．（禁止他游泳）
77．It he should apply for a patent for his invention．（这位发明家没有想到……）
78．Let’s discuss the problem this Friday afternoon ．（要是你方便的话）
79．Here was a chance for me that would catch snakes but not harm them．（通过发明某种仁慈的东西来表现一下自己）forbids／forbade him to go swimming
网友回答
(答案→)forbids／forbade him to go swimming
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