蒋健棠英语实用句子12:When I saw a poisonous snake on the road

 　　When I saw¹ a poisonous snake on the road I stepped³ on the gas⁴ at once.

　　当我看到路上有条毒蛇时，我马上加大了油门。

　　step² on the gas比较口语的说法，其实是step on the pedal,踩的是那个踏板。

1 saw   

vbl.看见(see的过去式)；n.锯；v.用锯子锯

参考例句：

• Would you like to saw a tree for me?你能为我锯棵树吗？
• The moment I saw you,I knew you were angry with me.我一看到你，就知道你在生我的气。

2 step   

n.脚步；台阶；梯级

参考例句：

• She walked on a few steps.她继续走了几步。
• He was sitting on the bottom step.他坐在最下面的一级台阶上。

3 stepped   

v.举步，行走，跨步( step的过去式和过去分词 )；离开(along)；（尤指马）轻快地走；（跳舞时）合着节拍走

参考例句：

• The ice cracked as I stepped onto it. 我一踩冰就裂了。
• She was introduced and stepped up to the podium. 介绍完毕后她就登上讲台。 来自《简明英汉词典》

4 gas   

n.煤气，气体，汽油；vt.毒(死)，加油

参考例句：

• I seem to smell gas.我好像闻到煤气味儿。
• There are several kinds of gas in the air.空气中有几种气体。