謂語

謂語(predicate verb)是對主語動作或狀態(tài)的陳述或說明，指出“做什么”、“是什么”或“怎么樣”。謂語動詞的位置一般在主語之后。

謂語由動詞充當，說明主語所作的動作或具有的特征和狀態(tài)。依據(jù)其在句中繁簡程度可把謂語分為簡單謂語和復合謂語兩類。不論何種時態(tài)、語態(tài)、語氣，凡由一個動詞(或動詞詞組)構成的謂語都是簡單謂語。

簡單謂語：

由動詞、動詞短語或者動詞的時態(tài)構成。如：

I like walking. (一般現(xiàn)在時主動語態(tài))

I made your birthday cake last night. (一般過去時主動語態(tài))

It is used by travellers and business people all over the world. (一般現(xiàn)在時被動語態(tài))

復合謂語：

1.由情態(tài)動詞或助動詞+不帶to的動詞不定式構成。如：

You may keep the book for two weeks.

He has caught a bad cold.

My sister is crying over there.

I have been waiting for you all the time.

I would stay at home all day.

2.由系動詞加表語構成。系動詞不能單獨作謂語，要和表語一起作謂語。

We are students.

Your idea sounds great.