now在句首是什么時(shí)態(tài)

　　Now she won't have to go out to work any more.

　　現(xiàn)在她不必再出去工作了。

　　She'll have had the results by now.

　　她現(xiàn)在應(yīng)該知道結(jié)果了。

　　We're used to the noise from the traffic now.

　　現(xiàn)在我們已經(jīng)適應(yīng)車輛往來的噪音了。

　　This unit is now an established part of the course.

　　這個(gè)單元現(xiàn)在為本課程既定的一部分。

　　There isn't nearly enough time to get there now.

　　現(xiàn)在根本沒有足夠的時(shí)間趕到那兒。

　　Now is a good time to invest in the property market.

　　現(xiàn)在是對房地產(chǎn)市場投資的好時(shí)機(jī)。