depend on 用法解析

—How often do you eat out?
— ________ ，but usually once a week.
A. Have no idea
B. It depends
C. As usual
D. Generally speaking
—Shall we go for a picnic tomorrow?
— Well, it all _______ the weather.
A. belongs to
B. happens to C concentrate on D. depends on
这道题的答案是B，主要考查动词depend的用法。

depend也是高一上学期要掌握的重点词汇，如在Unit 9 的Speaking部分有“Well, it depends.”的句式。

为使同学们对depend 的用法有一个全面的了解，现分述如下：
1. depend作为不及物动词，常与介词on 或upon连用，后接名词或代词。

如：
The people's lives depend on their crops.
You should not listen to rumor (谣言). You can depend on me.
2. depend 作“依靠”解，其后接“名词(代词)+ for sth.”。

如：
All living things depend on the sun for their growth.
3. depend作“相信”解，后接动名词或动名词复合结构。

如:
Susan can depend on their arriving here safely.
4. depend作“指望”解，后接“sb. + 不定式”。

如：
You can't depend on your enemy to help you.
5. depend 作“看……(情况)”解，后接从句。

如：
It just depends on how my wife deals with the problem.
6. depend 作“信赖；相信”解，后接不定式的被动结构作定语。

如：
Jane is a person to be depended upon.
7. depend 在口语中意为“看情况”，可以有That depends, It depends, It all depends 等几种说法。

如：
—Are you going?
—It all depends.
8. depend on (upon) it 意为“请相信；没问题”，用于句首或句末。

如：
Do depend on it, and we shall succeed in time.
9. depend on 后接表示“是否”的从句时，只用whether, 不用if。

如：
It depends on whether you want to do it or not.。