用let sb后加動(dòng)詞原形

　　如：Let’s water the flowers together.

　　是該做…的時(shí)候了用It’s time for+名詞或It’s time to +動(dòng)原。

　　幫助某人做某事是help sb with sth

　　如：幫我學(xué)英語是 help me with my English