walk的过去式是什么？

walkd的变形属于规则变化，所以walk的过去式和过去分词在原形后面直接加_ed,即walked。

例句：

1 He walked towards the summerhouse, at first furtively, then with more confidence.

他朝凉亭走去，开始还偷偷摸摸地，后来就壮大了胆子。

2. Michael gave him a dirty look and walked out.

迈克尔狠狠地瞪了他一眼然后走开了。

3. They walked right into a booby-trap and got blown to smithereens.

他们正好踩上了饵雷，结果被炸得粉身碎骨。