我该怎么做呢？
例句：
Just start the car!
只要发动车！
How should I do it?
我怎么发动汽车呢？
?This is the way you should do it.
你该这么做。
例句：
I can't do it.
我不会做。
This is the way you should do it.
你该这么做。
其他表达：
This is how you should do it.
You should do it this way.
This is how you do it.
?It'll do the trick.
这样的话就会很顺利。
表示稍微采用一些手段或方法就能产生所设想的效果/就会顺利。
例句：
How's this?
这样做怎么样？
It'll do the trick.
这样就会见效。
其他表达：
It'll be effective.
That'll work.
That'll do it.
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