原形不定詞

原形不定詞是無to的不定詞,即原形動詞。

It can't be true.

這不可能是真的。

You should read the rules carefully.

你們要仔細閲讀這些規則。

3.原形不定詞用在感官動詞see, hear, feel, watch, look at, listen to後作受詞補語,但在它們的被動語態中要用帶to的不定詞,作主詞補語。

I heard her sing a good song.

我聽到她唱一首好歌。

She was heard to sing a good song.

有人聽到她唱一首好歌。

4.原形不定詞用在使役動詞let, make, help, have後作受詞補語,但在它們的被動語態中,要用帶to的不定詞作主詞補語。

He made us laugh.

他逗我們發笑。

We were made to laugh.

我們被逗笑了。

5.原形不定詞的習慣用法。

You had better finish your homework.

你最好完成你的功課。

had better後要求接原形不定詞。

I would rather stay at home than go to the movies.

我寧願在家裏也不願去看電影。

would rather...than...後都要求原形不定詞。

All that we do every day is study.

我們每天做的只是研讀。

主詞部分有一個表示動作的動詞do時作主詞補語的不定詞通常多用原形不定詞。