请教高中英语问题

1、Don’t+verb+until

Don’twatchTVuntilyouhavefinishedyourhomework.

2、for/since+time

IhavegonetoBeijingmanytimessincewehavestartedthisproject.(start可以用完成式吗?)

3、may(forpermission)

MayIuseyourpencil?

4、negativecommands

Don’tgooutunlessyoufeelwell.(不要出门,除非你病好了.这样翻译对吗?)

5、noone

(Noone/nobody)can(passthrough/passover/getacross)mybridgeunlessyouanswermyquestionsandgetright.(没有人可以过我的桥,除非你答对我的问题.应该怎么翻译?)

6、nobody

Nobodycomestoseemeduringthespringfestivalholiday.

7、nothing

ThereisnothingneedmetodointhiscompanysoIabdicated.(语法对吗?)

8、presentperfect

Themayorhasinspectedourcompany3times.

9、since/for

Thereisnobodymakingtroublesincethemayorhasvisitedourfactory.

Mybosshaslivedinfactoryforthreedaysbecausethereareabunchofhooligansmakingtroublewithwomenworkersrecently.

10、until

Shecan’tgoshoppinguntilshegetshersalarynextmonth.

11、yet

Haveyougottenyourpaycheckyet?