高悬赏求5句英语的语言点,语法1.LastmonthIwasluckyenoughtohaveachancetomakeatripintospacewithmyfriendLiYanping,anastronomer.2.Beforeweleft,LiYanpingexplainedtomethattheforceofgravitywouldchangethreetimes

　　高悬赏求5句英语的语言点,语法

　　1.LastmonthIwasluckyenoughtohaveachancetomakeatripintospacewithmyfriendLiYanping,anastronomer.

　　2.Beforeweleft,LiYanpingexplainedtomethattheforceofgravitywouldchangethreetimesonourjourneyandthatthefirstchangewouldbethemostpowerful.

　　3.Icheeredupimmediatelyandfloatedweightlesslyaroundinourspaceshipcabinwatchingtheearthbecomesmallerandthemoonlarger.

　　4."Ohdear,"Icried,"walkingdoesneedabitofpracticenowthatgravityhaschanged."

　　5.Wewatched,amazedasfirebrokeoutontheoutsideofthespaceshipastheearth'sgravityincreased.求这五句话的语言点,语法,是什么从句等等.

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