Lesson 33 A Dead Current

It is a pity that every summer a few people drown at the beach.In some cases,these peopel were good swimmers.So how did it happen? Riptide!

Riptide is a strong underwater curent.It moves quickly away from shore and out to sea.It appears suddenly and pulls its victim(受害者) under and far off shore. Therefore,people should make it a rule never to swim too far out from the beach.

If you find yourself in a riptide,don't panic,And by no means should try to go against the tide and swim back to shore.You'll tire yourself out and probably drown.Intead,swim parallel to the beach.A riptide is very narrow.So just a few strokes in the right direction and you'll be out of danger.

in panic 在惊慌中

by no means 绝对比

A is parallel to B A与B平行

make it a rule to + 动词原形

= be in the habit of  + 动名词 习惯于

数量词 + 名词 + and + 主语 + 助动词 + 动词原形

已动词原形为首的祈使句 and/or 主语+ 助动词 + 动词原形

One more step and I'll shoot